Tomato Seeds - Indeterminate - Green Zebra Standard
Green-striped heirloom with zesty bite and tangy, citrus-like finish.
- Non-GMO Safe Seed Pledge
- Seed packets printed on forestry-certified paper (FSC, SFI, Rainforest Alliance)
- Curbside-recyclable mailers; SFI-certified kraft paper
- 1% for the Planet partner — supports environmental nonprofits
- Compact, energy-efficient facility with lean, low-waste operations
- Seeds: When properly stored, planted, and cared for, we guarantee reasonable germination and true-to-type growth for one year from purchase.
- Non-seed products: Free from defects in materials and workmanship for 30 days from shipment.
Excludes factors outside our control (extreme weather, pests, gardener error). If something’s off, contact us—we’ll make it right with a replacement, repair, or refund.
We do not sell seeds that are GMO or BE.
USDA “bioengineered (BE)” foods are those with detectable genetic material that was modified using in vitro recombinant DNA (rDNA) techniques, in ways not obtainable through conventional breeding or found in nature. The USDA’s National Bioengineered Food Disclosure Standard uses “bioengineered” as the nationwide labeling term.
- Detectable modified genetic material in the final food
- Created via in vitro rDNA techniques (e.g., gene transfer)
- Modifications not achievable through conventional breeding or nature
Description
The Green Zebra Tomato is a celebrated indeterminate heirloom prized for its electric coloration and tangy, complex flavor. Maturing in about 75–80 days, this variety produces medium-sized 3–5 ounce fruits with chartreuse-green flesh and vivid yellow striping that deepens as they ripen.
The flavor is bright, zesty, and slightly tart, with just enough sweetness to create a perfect balance—making it one of the most refreshing tomatoes for slicing and salads. Its firm texture and low seed content lend themselves beautifully to fresh salsas, sandwiches, and visually stunning culinary presentations.
Plants are vigorous and prolific, typically reaching 6–7 feet in height with steady yields throughout the growing season. They thrive in full sun and fertile, well-drained soil, and benefit from regular deep watering to enhance sweetness and prevent cracking.
Originally bred by tomato innovator Tom Wagner in the 1980s, the Green Zebra has since become a modern heirloom classic—an enduring favorite for gardeners and chefs who value both artistry and acidity in the same bite.
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1. Choosing the Right Location
Light Requirements:
Tomatoes are sun-loving plants that require at least 6–8 hours of direct sunlight daily, though 8–10 hours is ideal for strong fruit set and flavor. Choose a site with full southern exposure whenever possible. Avoid shaded areas near trees, fences, or tall crops. Plants grown in partial sun may produce leggy growth and fewer fruits.
Soil Requirements:
Tomatoes thrive in well-drained, loamy soil enriched with organic matter. The optimal pH range is 6.0–6.8, though they tolerate slightly acidic conditions. Prepare beds ahead of time by incorporating aged compost, leaf mold, or well-rotted manure to improve structure, fertility, and microbial activity.
Avoid compacted or waterlogged soil, which restricts root growth.
Sandy soils warm faster and suit early crops; heavier soils retain moisture better in dry climates.
Rotate planting sites annually to prevent nutrient depletion and disease buildup.
Soil Preparation Tip:
Before sowing or transplanting, loosen the top 8–12 inches of soil and blend in 2–3 inches of organic compost. If needed, amend with bone meal for phosphorus and greensand or kelp meal for potassium to promote strong roots and flowering.
2. Starting Seeds Indoors
Timing:
Sow tomato seeds 6–8 weeks before the final expected frost date. Adjust timing to your region so that transplants are ready to go outside once the soil has warmed to at least 60°F (16°C) and nighttime temperatures remain above 50°F (10°C).
Containers and Medium:
Use clean trays or small pots filled with a sterile, fine-textured seed-starting mix. Avoid heavy garden soil, which compacts easily and harbors pathogens.
Sowing Depth:
Sow seeds ¼ inch deep, cover lightly, and mist gently to settle the soil. Maintain even moisture—damp but never soggy.
Germination Conditions:
Tomato seeds germinate best at 75–85°F (24–29°C). Use a heat mat if needed. Germination typically occurs within 5–10 days, though some heirloom varieties may take up to two weeks.
Light After Germination:
Once sprouts appear, move trays to a bright, warm location or under full-spectrum grow lights. Provide 14–16 hours of light per day to prevent leggy growth. Keep lights about 2–3 inches above the seedlings and raise them as plants grow.
3. Transplanting Seedlings
Thinning:
Once seedlings develop their first set of true leaves, thin weaker ones to ensure each has ample light and airflow. Handle gently by the leaves, not the stems.
Potting Up:
When seedlings reach 3–4 inches tall, transplant them into larger pots (3–4 inches wide). Bury the stems up to the first true leaves—tomatoes form new roots along buried stems, creating stronger plants.
Hardening Off:
7–10 days before transplanting outdoors, gradually acclimate plants to outdoor conditions:
Start with 1–2 hours of filtered sun the first day.
Increase exposure each day, reducing watering slightly to toughen the stems.
Avoid windy or cold days during hardening.
4. Planting Outdoors
Timing:
Transplant tomatoes after the danger of frost has passed and the soil is warm. Soil temperatures below 55°F (13°C) can stunt root growth. Early planting can be improved by warming the soil with black plastic or row covers two weeks prior to transplanting.
Planting Depth:
Plant deeply—bury the stem up to the first or second set of true leaves. This encourages a robust root system. In heavy clay soil, plant slightly shallower and mound soil around the base.
Spacing:
Determinate (bush) types: 18–24 inches apart
Indeterminate (vining) types: 24–36 inches apart
Rows: Space rows 30–42 inches apart for good airflow and access.
Proper spacing reduces humidity around leaves, helping prevent fungal disease and promoting even ripening.
Watering at Planting:
Water thoroughly after transplanting to settle soil around the roots. Use lukewarm, non-chlorinated water. Avoid overhead watering—direct it at the base to minimize leaf wetness and disease spread.
5. Watering and Moisture Management
Initial Watering:
Keep the soil evenly moist but never waterlogged during germination and early growth. Light, frequent watering helps young roots establish.
Ongoing Watering:
Once established, switch to deep, infrequent watering, encouraging roots to grow downward. Aim for about 1–1.5 inches of water per week, adjusting for weather and soil type. Water early in the day so foliage dries before evening.
Organic Tip:
Use rainwater whenever possible—its natural minerals and softness encourage better plant health compared to chlorinated tap water.
6. Temperature and Climate Conditions
Tomatoes favor warm conditions with daytime temperatures between 70–85°F (21–29°C) and nighttime temperatures above 55°F (13°C). Extended cold slows growth, while prolonged heat above 95°F (35°C) may reduce fruit set.
In hot climates, provide light afternoon shade using shade cloth or tall companion crops (basil, corn, or sunflowers). In cooler regions, use row covers or cloches to retain warmth during early growth. Maintain steady soil warmth for optimal root activity.
7. Fertility and Soil Feeding
Before planting, mix compost into the soil at a rate of about 1 part compost to 3 parts native soil. Tomatoes are moderate-to-heavy feeders but respond best to slow, balanced nutrition.
At planting time: mix a small handful of organic tomato fertilizer, bone meal, or worm castings into the hole.
Mid-season: side-dress with compost or dilute fish emulsion every 3–4 weeks.
Avoid over-fertilizing with nitrogen, which produces lush foliage but few fruits.
8. Early Support and Spacing Care
Install stakes, cages, or trellises at planting to avoid root disturbance later. Even determinate types benefit from light support to prevent fruit from touching the soil.
Maintain generous spacing to improve air circulation and light penetration—critical for disease prevention and even ripening.
9. Mulching and Moisture Control
After transplanting, apply 2–3 inches of organic mulch (straw, shredded leaves, or composted bark) around the base of each plant. Leave a small gap around the stem to prevent rot.
Mulch helps:
Retain soil moisture
Regulate temperature
Suppress weeds
Prevent soil from splashing onto leaves (reducing blight risk)
Refresh mulch as it decomposes throughout the season.
10. Organic Pest and Disease Prevention at Planting
Healthy soil and spacing are your best defense. Avoid synthetic chemicals—rely on prevention and natural balance.
Pests: Keep an eye out for aphids, hornworms, and whiteflies. Use neem oil, insecticidal soap, or hand-picking to control populations early.
Disease Prevention:
Water at the base to avoid wet leaves.
Provide good air flow between plants.
Rotate crops yearly; avoid planting tomatoes after peppers, potatoes, or eggplants.
Use compost teas (aerated or non-aerated) as a soil drench to boost microbial health.
Companion plants like basil, marigold, garlic, and borage help deter pests naturally while enhancing pollination and flavor.Choosing the Right Location:
Light Requirements: Tomato - Yellow Pear thrives in full sun. Select a location that receives at least 6-8 hours of direct sunlight daily.
Soil Requirements: Prefers well-drained, fertile soil with a pH of 6.0-6.8. Although adaptable to various soil types, it grows best in loamy soil enriched with organic matter.
Planting Seeds:
Timing: Start seeds indoors 6-8 weeks before the last expected frost date. Transplant seedlings outdoors after the last frost when the soil has warmed.
Sowing Depth: Sow seeds 1/4 inch deep in seed-starting mix. Cover lightly with soil and water gently.
Spacing: Thin seedlings to 18-24 inches apart when transplanting to allow adequate space for growth. Rows should be spaced about 24-36 inches apart.
Watering:
Initial Watering: Keep the soil consistently moist but not waterlogged until the seeds germinate, which typically takes 7-14 days.
Ongoing Watering: Once established, water deeply and regularly, especially during dry periods. Water the plants at the base to avoid wetting the foliage, which can lead to fungal diseases.
Temperature and Climate:
Preferred Temperature: Tomato - Yellow Pear grows best in warm temperatures ranging from 70-85°F (21-29°C). It can tolerate higher temperatures but may require more frequent watering during extreme heat.
Fertilization:
Feeding: Incorporate organic matter such as compost into the soil before planting. Use a balanced, all-purpose fertilizer at planting time and side-dress with compost or organic fertilizer mid-season.
Pruning and Thinning:
Thinning: Thin seedlings to prevent overcrowding, which can hinder growth and reduce air circulation.
Pruning: Prune suckers (the small shoots that grow between the stem and branches) to promote larger fruit production. Stake or cage plants to support the vines and improve air circulation.
Mulching:
Mulch Application: Apply a layer of organic mulch around the base of the plants to retain soil moisture, suppress weeds, and regulate soil temperature. Avoid piling mulch directly against the stems to prevent rot.
Pest and Disease Management:
Common Pests: While tomatoes can attract pests such as aphids, tomato hornworms, and whiteflies, using insecticidal soap or neem oil can help control these pests if necessary.
Diseases: Ensure good air circulation around the plants to prevent fungal diseases. Avoid overhead watering to minimize the risk of mildew and other fungal issues. Crop rotation and proper spacing can also help reduce disease incidence.
Watering
Provide 1–1½ inches of water per week, adjusting during heat waves or dry periods.
Water deeply and evenly to promote strong root systems and prevent splitting, which this thin-skinned variety can be prone to.
Use drip irrigation or soaker hoses to deliver water directly to the soil, keeping foliage dry to limit blight and leaf spot.
Avoid overhead watering, especially late in the day.
Mulch 2–3 inches deep with straw, compost, or shredded leaves once the soil warms to conserve moisture and regulate temperature.
Tip: Consistent watering enhances Green Zebra’s distinctive striping and tangy-sweet flavor—uneven moisture can cause cracking and tough skin.
Fertilizing
Before planting, mix 2–3 inches of compost or aged manure into the soil.
Feed every 2–3 weeks during vegetative growth with a balanced organic fertilizer (10-10-10 or equivalent).
When flowering begins, switch to a low-nitrogen, high-potassium fertilizer (5-10-10) to promote fruit development and flavor intensity.
Supplement monthly with calcium or kelp extract to maintain plant vigor and prevent blossom end rot.
Avoid overfertilizing—too much nitrogen leads to lush foliage and delayed ripening.
Tip: Moderate fertility helps concentrate sugars and acidity, producing the classic tangy profile Green Zebra is known for.
Weeding & Mulching
Keep planting beds weed-free to prevent pest harborage and nutrient competition.
Apply 2–4 inches of organic mulch (straw, shredded leaves, or compost) to suppress weeds, conserve moisture, and improve soil health.
Weed carefully to avoid disturbing the shallow root system.
Sun & Heat Management
Provide 6–8 hours of full sunlight daily for optimal striping and sugar production.
Ideal temperature range: 75–90°F (24–32°C).
In prolonged heat above 95°F (35°C), use 30–40% shade cloth to protect blossoms and reduce stress.
Maintain good airflow between plants to prevent humidity buildup and disease.
Tip: Green Zebra develops its strongest striping and flavor balance under bright, steady sunlight—not under shade or fluctuating light.
Spacing & Support
Space plants 24–30 inches apart with 36–48 inches between rows.
As an indeterminate variety, Green Zebra requires sturdy cages, stakes, or trellises for vertical support.
Train vines upward to promote air circulation and improve fruit access.
Remove lower leaves below the first flower cluster to reduce disease spread through soil splash.
Tip: Prune lightly to allow sunlight to reach fruits—this encourages even ripening and distinct color contrast.
Ecological Interplanting (Science-Based Companion Strategy)
Encourage natural predators: Interplant with small, nectar-producing herbs like dill, coriander, or sweet alyssum to attract predatory wasps, lacewings, and hoverflies that feed on common tomato pests.
Pollinator enhancement: Incorporate native flowering species nearby to support bee activity and overall pollination rates.
Crop rotation: Rotate tomatoes annually with legumes, cereals, or root crops to break pest and disease cycles. Avoid planting after peppers, eggplants, or potatoes.
Soil protection: Maintain mulch and cover crops to foster beneficial soil microorganisms and deter erosion.
Tip: Biodiversity-driven planting and soil rotation are proven to reduce pest and disease incidence—far more effective than folklore-based companion pairings.
Container Growing
Grow in large containers (minimum 15–20 gallons) with heavy-duty cage or trellis support.
Use high-quality organic potting mix combined with compost and perlite for aeration and drainage.
Monitor soil moisture daily—container-grown plants dry faster in hot weather.
Feed every 10–14 days with compost tea or liquid tomato fertilizer for continuous productivity.
Tip: Mulch container surfaces to reduce evaporation and stabilize temperature for better fruit set.
Season Extension
Use row covers or tunnels early in the season to retain soil warmth and protect seedlings.
Preheat soil with black plastic mulch before transplanting in cooler climates.
As frost nears, remove new blossoms about 4 weeks before the first frost to concentrate ripening energy.
Harvest nearly ripe fruits before frost—they’ll finish coloring indoors at 65–70°F (18–21°C).
Tip: Green Zebra continues developing its yellow-green striping and tangy flavor even after harvest—store in indirect light for best results.
Harvesting:
Harvest when fruits display their signature pattern of bright chartreuse skin marked by deep emerald striping, and the lighter areas turn slightly golden beneath the green hue. Fully ripe fruits average 3–4 ounces and yield slightly to gentle pressure near the stem while maintaining firm texture.
Use pruning shears or scissors to harvest to prevent tearing delicate skins. Avoid twisting or pulling, as this can damage the stem and affect continued production.
Check vines frequently—Green Zebra often holds its color pattern even when fully ripe, so touch and subtle tone shift (a slight amber blush) are reliable cues. Pick every few days during heavy production to maintain vine vigor.
Flavor & Culinary Use:
Green Zebra is prized for its bold, tangy flavor with a hint of sweetness and a crisp, citrusy finish. Its flesh is dense and juicy, with balanced acidity that makes it a chef’s favorite for contrast in dishes.
Perfect for fresh eating, salsas, and plating, where its striking color adds vibrancy. The flavor deepens when roasted, producing a sweet-savory complexity ideal for sauces, chutneys, or paired with grilled meats.
Its bright tang complements creamy or fatty foods—avocado, mozzarella, burrata, or olive oil—balancing richness with lively acidity. Green Zebra also shines in chilled soups and green tomato relishes.
Handling & Storage:
Keep harvested fruits at 55–70°F (13–21°C) in a shaded, ventilated location. Do not refrigerate; cool storage dulls its sharp flavor and causes flesh softening.
Arrange in a single layer on padded trays or paper-lined baskets to avoid bruising the skin. Green Zebra’s firm texture offers good shelf life—typically 6–8 days when stored properly.
For market transport, pick slightly underripe; the fruit will finish ripening evenly at room temperature without loss of flavor.
Pruning & Support:
As an indeterminate variety, Green Zebra benefits from strong vertical support and regular light pruning. Provide cages or stakes 6–7 feet high and tie vines gently with soft ties as they grow.
Remove lower leaves after establishment to prevent soil-borne disease. Pinch suckers below the first flower cluster to direct energy into fruit production.
Avoid over-pruning, as moderate leaf canopy helps shade the fruit and prevent sunscald, which can dull the signature green striping. Regular training improves airflow and fruit uniformity.
Sun & Water Tips:
Provide 6–8 hours of direct sunlight daily for best color definition and flavor development. In very hot climates, light afternoon shade maintains fruit firmness and prevents stress.
Water deeply once or twice per week, maintaining consistent soil moisture to prevent cracking and uneven ripening. Apply mulch—straw, compost, or shredded leaves—after the soil warms to retain moisture and stabilize soil temperature.
Use drip irrigation or soaker hoses to avoid wetting foliage and reduce the risk of foliar diseases. Consistent hydration enhances both yield and acidity balance.
Seed Saving:
Select seed from healthy, true-to-type plants bearing well-striped fruits with rich, tangy flavor. Allow chosen fruits to ripen fully on the vine for mature seed development.
Scoop seeds and pulp into a jar with water and ferment for 2–3 days to break down the gelatinous seed coating. Stir daily to prevent mold, then rinse thoroughly and spread seeds thinly on a non-stick surface or fine mesh to dry for 7–10 days in shade with good airflow.
Store fully dried seeds in airtight containers in a cool, dark, and dry environment. Properly cured Green Zebra seeds remain viable for 4–6 years. Being open-pollinated, they breed true unless cross-pollinated by nearby tomatoes; maintain 25–50 feet of isolation for purity.
Ecological & Pollinator Notes:
Green Zebra thrives in organically rich, well-drained soil with steady moisture and active soil life. Its open blossoms attract pollinators such as bumblebees and hoverflies, increasing fruit set through vibration pollination.
Interplant with flowering herbs like basil, dill, or calendula to encourage beneficial insects while deterring common pests. Rotate tomato crops every 2–3 years with legumes or leafy greens to replenish nitrogen and reduce disease buildup.
Avoid planting near other nightshades such as potatoes or peppers. Space plants 30–36 inches apart for optimal airflow and even light exposure. Adding compost or worm castings yearly enhances microbial vitality and fruit complexity.
Culinary Pairings & Presentation Tips:
Green Zebra’s vivid appearance and crisp acidity make it a showpiece in both home and professional kitchens. Use raw to brighten salads, stack in layered caprese with red or orange heirlooms, or dice into fresh salsa verde.
Roast with olive oil and garlic for a zesty, caramelized condiment or blend into a vibrant green tomato chutney with lime and ginger.
Pairs beautifully with smoked fish, goat cheese, citrus vinaigrettes, or roasted vegetables. For presentation, combine with yellow and purple tomatoes to emphasize contrast—the bright green striping evokes freshness, vitality, and modern culinary artistry.
Insects & Mites
Tomato Hornworms (large caterpillars, heavy foliage loss and fruit chewing)
Controls: Inspect plants in early morning and evening for hornworms. Handpick and destroy them immediately. Encourage parasitic wasps (Cotesia congregata) to naturally suppress hornworm populations. Apply Bacillus thuringiensis (Bt) late in the afternoon, ensuring full coverage of leaves. Maintain a weed-free garden perimeter to prevent moths from laying eggs.
Aphids (leaf curling, sticky honeydew, and reduced plant vigor)
Controls: Use yellow sticky traps to detect infestations early. Apply neem oil or insecticidal soap every 5–7 days, focusing on the undersides of leaves. Encourage lady beetles, lacewings, and hoverflies through companion planting with dill, yarrow, and fennel. Avoid nitrogen-heavy fertilizers that promote aphid-prone new growth.
Whiteflies (yellowing leaves, honeydew accumulation, sooty mold)
Controls: Place yellow sticky traps near the base of plants to capture adult whiteflies. Apply neem oil or horticultural soap weekly as needed. Introduce Encarsia formosa wasps for long-term biological control. Maintain airflow by pruning lower leaves and keeping nearby weeds under control.
Spider Mites (fine webbing, stippling, and leaf bronzing)
Controls: Increase humidity and water plants regularly to prevent drought stress. Spray foliage with a steady stream of water to knock mites off plants. Apply horticultural oil or insecticidal soap weekly until the population is reduced. Avoid dusty or overly dry growing conditions that favor mites.
Diseases
Early Blight (Alternaria solani) (dark concentric leaf spots and stem lesions)
Controls: Rotate tomato crops every 2–3 years and avoid planting near peppers or potatoes. Apply copper-based fungicide preventively in humid weather. Water at the base of plants and prune lower leaves for airflow. Remove infected leaves and debris promptly to prevent spread.
Fusarium Wilt (Fusarium oxysporum) (yellowing, wilting, and lower leaf drop)
Controls: Solarize soil before planting to reduce fungal populations. Grow resistant cultivars when possible. Maintain well-drained soil and consistent watering. Remove infected plants immediately and disinfect tools.
Septoria Leaf Spot (Septoria lycopersici) (small grayish lesions, premature leaf drop)
Controls: Maintain mulch to prevent soil splash. Apply copper fungicide preventively during humid conditions. Prune for airflow and remove infected leaves immediately. Avoid overhead watering to minimize leaf wetness.
Physiological & Environmental Issues
Blossom End Rot (calcium deficiency, dark sunken fruit ends)
Controls: Keep soil moisture consistent and mulch to retain water. Test soil calcium and amend with lime or gypsum if deficient. Avoid overfertilization with nitrogen, which can limit calcium uptake.
Cracking (irregular watering or heavy rainfall during ripening)
Controls: Maintain steady soil moisture and avoid letting the soil dry out between waterings. Mulch heavily to regulate soil conditions. Harvest fruit promptly after rainfall to prevent splitting.
Sunscald (white or leathery patches from excessive sunlight)
Controls: Maintain adequate leaf canopy to shade fruits. Avoid over-pruning. Provide 20–30% shade cloth during extreme heat to prevent damage.
Monitoring & Prevention — Quick Checklist
Inspect plants twice weekly for hornworms, aphids, and early disease signs.
Rotate crops annually to prevent soilborne pathogens.
Maintain mulch to conserve moisture and reduce soil splash.
Water deeply at soil level and avoid wetting foliage.
Prune lower leaves for airflow while keeping canopy to shade fruit.
Encourage beneficial insects with diverse companion plants.
Remove and destroy diseased foliage immediately, sanitizing tools between uses.
Q: What type of tomato is Green Zebra?
Green Zebra is an indeterminate, open-pollinated specialty tomato (Solanum lycopersicum) known for its vivid green skin striped with golden-yellow bands. Bred by Tom Wagner in the 1980s, this modern heirloom quickly became iconic for its tangy-sweet flavor and striking color. The fruits average 3–4 ounces and have a bright, zesty bite balanced by subtle sweetness, making them a favorite among chefs and gardeners alike.
Q: How long does Green Zebra take to mature?
Expect 75–80 days from transplant to ripe fruit. It’s a mid-season variety that produces continuously until frost.
Q: How long does it take for Green Zebra seeds to germinate?
Seeds germinate in 5–10 days at 75–90 °F (24–32 °C) with consistent warmth and moisture.
Q: Does Green Zebra need special soil conditions?
It performs best in rich, well-drained loam with a pH between 6.0 and 6.8. Compost or aged manure enhances both yield and fruit flavor.
Q: What spacing do Green Zebra tomatoes need?
Plant 24–36 inches apart in rows 36–48 inches apart. Support with cages or trellises, as vines are vigorous and produce numerous clusters.
Q: Do I need more than one plant for pollination?
No. Green Zebra is self-pollinating, though pollinator activity and gentle airflow can improve yield.
Q: Can I grow Green Zebra in containers?
Yes — use at least a 10-gallon container with nutrient-rich potting mix. Provide consistent watering and a strong cage or trellis.
Q: How tall do Green Zebra plants get?
Plants reach 5–6 feet tall when staked. Regular pruning of lower leaves encourages airflow and reduces disease risk.
Q: Why are my Green Zebra fruits cracking?
Cracking occurs from irregular watering, especially after dry periods followed by rain. Keep soil moisture steady and mulch to maintain consistency.
Q: How should I harvest Green Zebra tomatoes?
Harvest when the background color shifts from bright green to a more golden hue and the yellow stripes deepen. Fruits should feel slightly soft to the touch.
Q: How do I store Green Zebra tomatoes after harvest?
Store at 55–70 °F (13–21 °C) out of direct sunlight. Avoid refrigeration, which dulls the flavor and alters the texture.
Q: Are Green Zebra tomatoes good for cooking?
Yes. They’re excellent for salads, roasting, and salsas, adding tang and color contrast. Their firm texture holds up well when grilled or roasted.
Q: Are Green Zebra tomatoes heirloom?
Technically, Green Zebra is a modern heirloom — bred using traditional open-pollinated methods. It’s been preserved and shared for decades for its unique coloration and flavor.
Q: Why do my fruits stay pale green instead of turning golden-striped?
Cool weather or excess nitrogen can slow pigment development. Ensure full sunlight and balanced nutrition for full color expression.
Q: Can I save seeds from Green Zebra?
Yes. As an open-pollinated variety, it will breed true. Choose ripe fruits, ferment seeds for 2–3 days, rinse, and dry completely before storing.
From Seed Indoors (Spring)
From Plant (Spring)
Fall Planting
Expected Harvest
Is this a good fit for your garden?
Tomatoes are one of the greatest agricultural gifts of the Indigenous peoples of the Americas. Long before European contact, Indigenous farmers of western South America and Mesoamerica had already domesticated wild Solanum species, transforming them from small, sour berries into richly flavored, productive crops. Grown in raised fields and terraced gardens, tomatoes became part of a vibrant food system alongside maize, beans, and chili peppers — a living agricultural science that continues among Indigenous growers today.
When tomato seeds traveled across the Atlantic in the 1500s, they carried that legacy with them. European growers, first skeptical, gradually embraced the fruit, refining new forms in Italy, France, and Spain. Yet every variety, from the smallest cherry to the densest paste tomato, still descends from those early Indigenous selections.
The Green Zebra Tomato is a modern heirloom bred in the 1980s by tomato breeder Tom Wagner of Everett, Washington — a passionate seed innovator who sought to revive color diversity and flavor complexity in open-pollinated tomatoes. Its distinctive chartreuse-and-yellow striping and tangy-sweet flavor made it an instant classic, proving that the heirloom tradition is not confined to the past but continues through creative seedkeeping today.
Though its development is recent, the Green Zebra’s lineage carries the full depth of tomato history. Its vivid green hue recalls the earliest cultivated forms of Solanum lycopersicum in Mesoamerica, many of which ripened to yellow-green shades. By selecting and stabilizing these ancestral traits, Wagner continued the same process that Indigenous farmers began millennia ago — choosing for taste, beauty, and resilience through observation and care.
In today’s gardens, the Green Zebra Standard Tomato stands as a bridge between ancient and modern innovation. Each luminous, striped fruit celebrates the spirit of living tradition — proof that the art of breeding, like the seed itself, is an ever-growing expression of human creativity rooted in Indigenous genius.
Healthy, well-adapted plants form the foundation of a strong seed line. Select only plants that are disease-free, vigorous, and true to type. Look for traits you wish to preserve—flavor, yield, fruit size, shape, color, and resilience to local conditions.
Mark these plants early in the season with colored ties or labels. Observe them through harvest, ensuring they maintain strong growth and fruit uniformity. Avoid saving seeds from hybrid varieties unless intentionally breeding for new traits, as hybrids will not breed true. Open-pollinated and heirloom tomatoes are ideal because they reproduce faithfully from one generation to the next.
When possible, save from at least six to ten plants per variety to maintain genetic diversity and avoid narrowing the gene pool.
2. Harvesting Seeds
Allow fruits to ripen fully on the vine until they develop deep color and softness. Overripe tomatoes produce the most mature, viable seeds.
Harvest carefully to avoid bruising.
Slice the fruit across its middle (not stem to blossom end) to expose the seed cavities.
Scoop out the seeds along with the gel (locular material) into a clean glass or ceramic container.
Label each container with the variety name immediately to prevent mix-ups.
3. Fermentation: Nature’s Cleaning Process
Tomato seeds are encased in a gelatinous coating that contains growth inhibitors. Fermentation naturally removes this layer while reducing seedborne pathogens in an organic, chemical-free way.
How to ferment seeds:
Add enough non-chlorinated or rainwater to the seed pulp to make it fluid.
Loosely cover the container with a breathable cloth or lid to allow airflow while keeping insects out.
Place in a warm, shaded area (70–80°F / 21–27°C).
Stir the mixture once or twice daily to encourage even fermentation.
Within 2–4 days, a thin film or mold will form on the surface—this is normal. The process is complete when most viable seeds have sunk to the bottom and the liquid no longer appears gelatinous.
Do not ferment longer than 4 days, as over-fermentation can reduce germination rates.
4. Cleaning Seeds (Organic Methods)
Once fermentation is complete:
Add fresh water, stir, and let the good seeds settle.
Carefully pour off the floating pulp, debris, and non-viable seeds.
Repeat until the water runs clear.
Strain the clean seeds through a fine mesh or cheesecloth to remove excess water.
Optional organic sanitization:
Instead of bleach, use one of the following gentle, natural alternatives:
Hydrogen peroxide rinse: Soak seeds in a 3% hydrogen peroxide solution for 5 minutes, then rinse thoroughly with clean water.
Apple cider vinegar solution: 1 part vinegar to 10 parts water for 1 minute, followed by thorough rinsing.
Chamomile tea soak: Use cooled, strong chamomile tea as a mild antifungal rinse before drying.
Each option helps reduce fungal spores while maintaining organic integrity.
5. Drying Seeds
Spread cleaned seeds in a single layer on a ceramic plate, mesh screen, or parchment paper. Avoid metal trays and paper towels, which can stick or react with the seeds.
Dry in a warm, shaded, well-ventilated area—never in direct sunlight or above 95°F (35°C). Stir daily to prevent clumping and ensure uniform drying.
Seeds are fully dry when they feel hard and brittle, breaking rather than bending under pressure. This usually takes 7–14 days depending on humidity.
If drying indoors in humid climates, a small fan or food dehydrator on the lowest setting (around 85°F / 29°C) can speed the process safely.
6. Storing Seeds
Proper storage protects your seed legacy:
Packaging: Store dry seeds in paper envelopes for short-term or airtight glass jars for long-term storage. You may add a small pouch of silica gel, baked rice, or powdered milk wrapped in paper as a natural desiccant.
Labeling: Write variety name, year saved, and any notable traits or growing conditions.
Environment: Keep seeds in a cool, dark, and dry place. Ideal storage temperatures are between 35–45°F (1–7°C).
Avoid frequent temperature changes or exposure to moisture. Under good storage, tomato seeds remain viable for 4–10 years, sometimes longer when kept refrigerated or frozen with humidity control.
7. Testing Seed Viability
Before planting, test seed viability to ensure quality:
Moisten a paper towel with clean, non-chlorinated water and place 10 seeds on it.
Fold and seal it inside a plastic bag or covered dish.
Keep in a warm (75–80°F / 24–27°C), dark area for 5–7 days.
Count how many have germinated.
8–10 sprouts: excellent viability
6–7 sprouts: acceptable, plant more heavily
Below 6 sprouts: refresh seed stock next season
8. Preventing Cross-Pollination
Tomatoes are self-pollinating, but pollinators like bees can occasionally cause crossing between varieties. To ensure purity:
Space varieties 10–25 feet apart if possible.
Use fine mesh blossom bags or lightweight fabric covers on selected flowers to ensure self-pollination only.
Collect seeds from multiple fruits and plants to preserve genetic diversity.
For seed-saving gardens, consider grouping similar types (like all cherries or all beefsteaks) in separate zones to minimize accidental crosses.
Isolation is especially important if you grow rare or heritage varieties that you want to keep true to their line.
9. Record Keeping and Documentation
Good records turn seed saving into a living science. Record:
Parent plant characteristics
Harvest date and location
Fermentation duration
Cleaning and drying methods
Storage conditions
Germination test results
Add personal notes on taste, disease resistance, and performance in your region. This information builds a reliable record of adaptation over time, forming the backbone of your seed stewardship work.
10. Organic Tips for Success
Never use chlorinated tap water; it can damage the natural microbial balance in fermentation.
Compost the leftover tomato pulp and skins—they enrich your soil for the next growing season.
Rotate crops yearly to prevent soilborne disease buildup.
Encourage beneficial insects such as native bees, hoverflies, and lady beetles to maintain ecological pollination balance.
Avoid synthetic fungicides or seed treatments that disrupt the natural seed microbiome.
Rejuvenate seed lots every few years by growing out and resaving fresh seed to maintain vitality.
Label immediately—unlabeled seed is lost history.
Culinary Uses
Tomatoes are among the most useful and diverse crops a grower can raise. Their natural harmony of sweetness, tang, and savory depth makes them a foundation of cuisines across the world. Nearly every culture has found ways to preserve, cook, or celebrate the tomato, and each type offers its own best use.
General Preparation Methods
Fresh Eating: Tomatoes can be sliced, diced, or eaten whole for a refreshing burst of flavor. Their acidity balances rich or oily dishes, and their juice adds natural umami depth to plant-based meals.
Cooking: Tomatoes transform when heat is applied—their sugars caramelize, their acidity mellows, and flavors deepen. Stewed or roasted tomatoes form the base for soups, sauces, chutneys, and gravies.
Preserving: Tomatoes are among the easiest crops to preserve. They can be sun-dried, oven-dried, canned, or frozen, retaining their bright taste for winter use.
Fermentation and Pickling: Sliced green or ripe tomatoes can be fermented with salt or lacto-cultured for tangy condiments rich in beneficial microbes.
Juices and Pastes: Pureed tomatoes yield smooth juice or concentrated paste for storage, sauces, and cooking.
Uses by Type
Each category of tomato lends itself best to certain culinary or preservation uses:
Slicer Tomatoes (Large and Beefsteak types):
Best for sandwiches, burgers, and fresh salads. Their large, juicy slices hold flavor and texture well. Excellent for thick sauces or roasted preparations.
Cherry and Grape Tomatoes:
Naturally sweet and quick to mature, these are perfect for snacking, salads, roasting, and skewers. They can be dried or blistered in oil for concentrated flavor.
Paste and Plum Tomatoes (Roma types):
Contain less water and more flesh, making them ideal for cooking down into sauces, ketchups, and pastes. Their texture holds well in slow-cooked dishes.
Canning or Processing Varieties:
Balanced between juice and flesh, these tomatoes are excellent for large-batch preserving. They peel easily, making them useful for stewed tomatoes, soups, and juice.
Heirloom Tomatoes:
Valued for their distinct colors, shapes, and complex flavors. Best enjoyed fresh, in salads, or as centerpiece ingredients where their taste and appearance shine.
Green or Specialty Tomatoes:
Unripe fruits or green varieties can be fried, pickled, or used in relishes. Their firm flesh and bright acidity make them unique for savory applications.
Nutritional Benefits
Tomatoes contribute richly to a healthy diet without overstating medicinal claims. They are naturally low in calories and high in hydration, providing essential nutrients that support overall well-being:
Vitamins: High in vitamin C, vitamin K, and vitamin A (as beta-carotene), which support immune function, bone strength, and visual health.
Minerals: Provide potassium, manganese, and trace amounts of iron and copper.
Phytonutrients: Contain lycopene, beta-carotene, and chlorogenic acid—antioxidants that help neutralize free radicals.
Dietary Fiber: Promotes digestion and balances blood sugar when eaten with other whole foods.
Cooking tomatoes increases lycopene availability, while fresh tomatoes retain higher vitamin C content, making both raw and cooked forms valuable parts of the diet.
Cultural and Practical Benefits
Tomatoes carry deep cultural significance. They connect growers and cooks through shared tradition, adaptation, and local flavor. Their ease of growth and abundance make them a cornerstone of seed sovereignty and community gardening.
Adaptability: Tomatoes thrive in containers, raised beds, and open fields, providing harvests even in limited space.
Economic and Community Value: A reliable crop for market growers and home seedkeepers alike. Fresh tomatoes, sauces, and preserved goods can all be sold or traded within local economies.
Seed Stewardship: Saving tomato seeds encourages local adaptation to soil and climate. Over time, these saved lines develop regional hardiness and flavor that reflect the land itself.
Teaching and Sharing: Tomatoes are often a beginner’s introduction to seed saving, fermentation, and seasonal cooking, bridging generations and passing on knowledge through practice.
Everyday Benefits and Kitchen Versatility
Tomatoes bring balance and brightness to nearly any dish. They pair naturally with herbs like basil, oregano, thyme, and parsley; with onions, garlic, and peppers; and with proteins ranging from beans to fish and poultry.
They also serve as a base for numerous cultural staples:
Italian: Pasta sauces, bruschetta, and margherita pizzas.
Mexican: Salsas, pico de gallo, and tomato-chile stews.
Indian: Tomato curries, chutneys, and masala gravies.
Mediterranean: Tomato-cucumber salads, stewed vegetables, and roasted spreads.
American and Southern: Fried green tomatoes, tomato gravy, and canning traditions.
Their diversity of form—round, pear-shaped, oblong, ribbed, or miniature—mirrors their diversity of use. Each variety, from a sun-warmed cherry to a dense Roma, brings its own balance of sweetness, acidity, and aroma to the plate.
Environmental and Garden Benefits
Beyond the kitchen, tomatoes contribute to ecological resilience:
Pollinator Attraction: Tomato blossoms draw bumblebees and native pollinators.
Companion Planting: Pair well with basil, marigold, garlic, and carrots to deter pests and enrich nearby crops.
Soil-Building Potential: Mulching tomato beds with compost and organic matter strengthens soil structure for future plantings.
Diversity Preservation: Growing multiple tomato types maintains genetic diversity, supporting the larger ecosystem of cultivated food plants.
Shipped from U.S.A.
Our seeds are grown and sourced from the US. They're then packed and shipped from Colerain NC.
Triple tested
We regularly test the quality and germination rate of our seeds. We're so confident that our seeds are backed by a 1 year warranty!
Soil Readiness
for Tomato Plants (Solanum lycopersicum)Where to get a soil test
Best option: your state’s Cooperative Extension soil testing lab.
Summary
Recommended Amendments (per 100 sq ft)
How to Use
- Mix P & K sources into top 3–6″ a week or two before planting.
- If pH is low, apply lime 3–4 weeks pre-plant (or fall/winter).
- Side-dress tomatoes with ~0.1 lb N / 100 sq ft at first fruit set; a light second side-dress after heavy early harvest is optional.
- Keep soil evenly moist and mulch to help prevent blossom-end rot (a Ca/moisture issue).
- Add 1–2″ finished compost yearly to build organic matter.
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