Sparkler Radish Seeds

Name: Sparkler Radish Seeds
Brand: Alliance of Native Seedkeepers
SKU: RD2
Price: 2.0 USD
Availability: InStock

Scientific name Raphanus sativus var. radicula

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Alliance of Native Seedkeepers | SKU: RD2

Seed packet & garden essentials

What to know before you plant

View complete growing & care facts

250 minimum seeds per packet

Maturity20-29 Days · 20-29 Days
Growth habitRosette · Biennial · 7–12 in tall
Best usedirect-sown rows, cool-season beds, storage harvests, and careful thinning
Flavor & character‘Sparkler’ produces round roots with bright red tops and pure white bottoms, tender flesh, and mild, juicy flavor.
Germination3-7 Days days · 50–65 °F
Seed preparationUse clean seed-starting conditions, the listed sowing depth and temperature, and steady moisture without saturation
SunFull sun
Support & spacingNo-Support · space 3 in · rows 12 in
Container fitPossible in a properly sized container with reliable drainage, moisture, and room for the mature plant
Water needsModerate
SoilLoamy · pH 6.0–6.5
Planting seasonSpring/Fall · blooms Spring · Semi-Hardy

$2⁰⁰ USD

Pickup available at Bertie County Seeds

Usually ready in 2-4 days

Secure checkout Details

Triple-tested seed qualityRegular quality and germination checks support every packet.

We regularly test seed quality and germination as lots move through storage and packing. We stand behind the seed we send and want customers to contact us when a packet does not perform as reasonably expected.

1-year seed warrantyCoverage begins on the date of purchase.

When properly stored, planted, and cared for, we guarantee reasonable germination and true-to-type growth for one year from the date of purchase. Conditions outside our control—including extreme weather, pests, unsuitable storage, and gardener error—are excluded. Contact us when something is not right so we can review the situation and work toward a replacement, refund, or another fair resolution.

Non-GMO / BE seed policyWe do not buy or sell genetically engineered or bioengineered seed.

Every seed variety we sell is non-GMO.

USDA’s National Bioengineered Food Disclosure Standard defines bioengineered foods as containing detectable genetic material modified through in vitro recombinant DNA methods in ways not achievable through conventional breeding or found in nature.

Hybrid means parent lines were conventionally crossed; hybrid does not mean GMO.
Heirloom and open-pollinated describe how a variety is maintained and reproduced.
Organic certification is separate and is shown only when verified for the individual product.

Read how we define heirloom, hybrid, and GMO/BE seed · USDA BE Standard

Packed in Colerain, North CarolinaPrepared in our seed room for gardens across the country.

Seeds are packed and shipped from Colerain, North Carolina. Our packets use forestry-certified paper, and we use recyclable paper mailers where appropriate. AONSK is also a 1% for the Planet partner while continuing to reduce waste in packing and fulfillment.

Seed success profile

Rules-based · no AI

Gardener experience Beginner-friendly

Germination difficulty Straightforward

Preparation before sowing: Use clean seed-starting conditions, the listed sowing depth and temperature, and steady moisture without saturation
Germination speed: Typical — usually 7–21 days
Growing complexity: Direct-sown or transplanted crop requiring loose soil, thinning, and careful moisture management
Patience and timing: 20-29 Days

Is this seed a good match for your experience?

Expected germination: 3-7 Days
Germination temperature: 50–65 °F
Stratification: Not normally required by the current record
Scarification: Not normally required by the current record
Pre-soaking: Not normally required by the current record
Light during germination: Cover to the recorded depth; provide strong light immediately after emergence
Germination pattern: Usually reliable when seed is stored well and temperature, depth, moisture, and preparation match the recorded requirements
Transplant sensitivity: Root crops are generally direct sown; alliums vary
Starting method: Cataloged as suitable for direct sowing; follow the product-specific timing and depth.
Best chance of success: For Sparkler Radish Seeds, control temperature and moisture at sowing, label the start date, and compare emergence with the complete recorded germination window before reseeding.

What to expect

Preparation: Use clean seed-starting conditions, the listed sowing depth and temperature, and steady moisture without saturation. Germination light: Cover to the recorded depth; provide strong light immediately after emergence. Expected emergence: 3-7 Days. Temperature: 50-65 °F.

Slow germination is not automatically failed germination.

Maintain the listed temperature, moisture, light, and treatment conditions for the full expected window. Some seed lots emerge gradually rather than all at once.

1 Beginner-friendly 2 One extra step 3 Some experience helpful 4 Patient growers 5 Advanced propagation

This deterministic profile uses recorded product facts; it is not Artificial Intelligence and is not a guarantee. Seed age, storage, sowing depth, moisture, temperature, light, local conditions, and aftercare can all affect results. Last reviewed July 2026.

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Check this seed against your real growing conditions

Compare timing, germination preparation, sunlight, soil, water, space, support, intended use, and your preferred level of seed-starting complexity.

Open the detailed garden-fit planner Deterministic rules · no Artificial Intelligence · no live weather service

Complete product description

Sparkler Radish Seeds

The cheerful, bicolored radish of crisp delight. ‘Sparkler’ produces round roots with bright red tops and pure white bottoms, tender flesh, and mild, juicy flavor. Perfect for fresh eating, salads, and garnishes.

Ready to harvest in just 25–30 days, with excellent uniformity and color contrast. Compact plants fit easily into small gardens or containers.

A classic American heirloom, ‘Sparkler’ brings both taste and beauty to the table—vibrant, fast-growing, and refreshingly crisp.

Minimum Seed Count: 250 seeds

Every recorded growing detail

Complete growing & care facts

Continue to the garden-fit planner

Plant identity

Minimum seed count 250 seeds

Seed product profile Root allium

Scientific name Raphanus sativus var. radicula

Also known as Radish, Radish Seeds - Sparkler Radish

Life cycle Biennial

Botanical family Brassicaceae

Reproductive type Open-Pollinated (OP)

Heritage qualifiers Non-GMO

Native to the United States Domesticated Plant

Domestication note Mediterranean Basin

Seed success and gardener experience

Gardener experience Beginner-friendlyLevel 2 of 5

Germination difficulty StraightforwardLevel 2 of 5

Preparation before sowing Use clean seed-starting conditions, the listed sowing depth and temperature, and steady moisture without saturation

Stratification Not normally required by the current record

Scarification Not normally required by the current record

Pre-soaking Not normally required by the current record

Light during germination Cover to the recorded depth; provide strong light immediately after emergence

Germination pattern Usually reliable when seed is stored well and temperature, depth, moisture, and preparation match the recorded requirements

Growing complexity Direct-sown or transplanted crop requiring loose soil, thinning, and careful moisture management

Transplant sensitivity Root crops are generally direct sown; alliums vary

First harvest or bloom 20-29 Days

Best chance of success For Sparkler Radish Seeds, control temperature and moisture at sowing, label the start date, and compare emergence with the complete recorded germination window before reseeding.

Timing and climate

Days to maturity 20-29 Days

Germination 3-7 Days

Germination temperature 50–65 °F

Planting season Spring/Fall

Bloom season Spring

Frost tolerance Semi-Hardy

Sunlight Full sun

Water needs Moderate

Site, soil, and space

Soil type Loamy

Preferred soil pH 6.0–6.5

Seed depth 1/2 in

Plant spacing 3 in

Row spacing 12 in

Mature height 7–12 in

Growth habit Rosette

Support needed No-Support

Suitable growing locations In-ground bed, Raised bed, Greenhouse, High Tunnel, Containers, Community garden, Hydroponic, Indoor growing, Vertical

Crop-specific details

Flavor profile ‘Sparkler’ produces round roots with bright red tops and pure white bottoms, tender flesh, and mild, juicy flavor.

Garden-fit planning for this variety

Will Sparkler Radish Seeds fit your garden?

Check soil depth, texture, direct-sowing conditions, moisture, thinning, and season timing.

Rules-based · no AI

US ZIP code optional Used for a broad seasonal estimate. It is not live weather. When are you planting? Growing space Direct sunlight Soil or growing mix Root-zone drainage Watering rhythm Seed-starting experience

Questions for this root or allium seedBed depth and texture Thinning Harvest goal

Seed-starting fit and patience Special preparation How long are you willing to wait for germination? Starting preference

Recorded product profileBeginner-friendlyStraightforwardRead why

Soil test, pH, drainage, and amendment calculator Have a laboratory soil report? Enter pH, nutrients, texture, bed size, and site observations here. Open soil tools

Recorded soil typeLoamy

Recorded pH range6.0–6.5

Water needsModerate

LightFull sun

Lab pH Organic matter (%) Soil texture Lab phosphorus rating Lab potassium rating

This tool interprets values you enter; it does not replace laboratory or Cooperative Extension amendment rates. Soil test methods and nutrient recommendations vary by region.

The full variety record

Sowing, care, harvest, troubleshooting, and history

How to start Sparkler Radish Seeds from seedPreparation, timing, depth, germination, transplanting, spacing, and early care

Variety-specific germination notes

Complete sowing and planting guidance

How to sow and plant Radish: plant in prepared, well-drained soil after the recommended seasonal window for your area. Keep the seedbed evenly moist during germination, thin seedlings to the listed spacing, and mulch established plants to conserve soil moisture.

How to grow this specific varietyLight, water, fertility, support, spacing, airflow, crop behavior, and season-long care

Complete growing guide

How to grow Radish: choose a site with the listed sunlight and soil requirements. Water consistently, avoid overcrowding, and monitor plants for pests, disease, and nutrient stress. Harvest at the proper stage for best flavor and seed quality.

Practical field and garden tipsExtra techniques, timing adjustments, and observations that improve success

Additional tips for Radish: succession plant when appropriate, label varieties clearly, and keep good garden notes on germination, vigor, flavor, and harvest timing so you can compare varieties season to season.

Harvest, storage, uses, and benefitsWhen and how to harvest, ways to use the crop, storage, culinary value, habitat value, and garden roles

Uses and benefits

Uses and Benefits:
Sparkler Radish (Raphanus sativus) is known for its round, red and white roots and mild flavor. It is often used in salads, sandwiches, and as a garnish.

Radishes provide vitamins, minerals, and antioxidants, supporting overall health. Sparkler Radishes are versatile in culinary applications, adding crunch and visual appeal to dishes.

Seed saving and carrying the variety forwardPollination, isolation, selection, harvest, cleaning, drying, and storage

Saving seeds from Sparkler Radish (Raphanus sativus):

1. Selecting Plants for Seed Saving:

Choose healthy plants with vigorous growth and well-formed roots.
Avoid plants showing signs of disease or poor growth.
2. Harvesting Seeds:

Timing: Allow the seed pods to mature and dry on the plant.
Collection: Harvest the dry seed pods before they start to shatter.
3. Drying Seeds:

Place the seed pods in a well-ventilated, dry area. Allow them to dry completely for one to two weeks.
4. Cleaning Seeds:

Separation: Open the seed pods and remove the seeds.
Inspection: Ensure seeds are clean and free from mold or pests.
5. Storing Seeds:

Containers: Store seeds in labeled paper envelopes or airtight containers.
Storage Conditions: Keep in a cool, dry, and dark place.
Viability: Use seeds within three to five years for best results.
6. Testing Seed Viability:

Test by placing seeds on a damp paper towel in a plastic bag in a warm place and check for germination.
Tips for Successful Seed Saving:

Isolation: Maintain distance between different radish varieties to prevent cross-pollination.
Pollinators: Encourage pollinators for better seed production.
Record Keeping: Keep detailed records of the process.

Common pests, diseases, and growing problemsIdentification, prevention, crop-safe response, and when intervention is justified

Complete pest and problem guide

Common pests and problems for Radish: monitor for chewing insects, sap-sucking insects, fungal leaf spots, damping off, poor germination from cold or dry soil, and stress from inconsistent watering. Use crop rotation, spacing, mulch, and good airflow to reduce pressure.

Questions gardeners ask about this seedProduct-specific answers for sowing, care, harvest, use, and seed saving

Frequently Asked Questions — Radish

Q: When should I plant Radish?
A: Follow the planting season listed on this product page and adjust for your local frost dates.

Q: How deep should I sow the seeds?
A: Use the seed depth listed in the growing facts.

Q: Can I save seed from this variety?
A: Open-pollinated varieties can generally be saved when properly isolated and selected; hybrids may not grow true to type.

History, provenance, and cultural contextWhat is documented, what is reported, what remains uncertain, and how the variety reached gardeners

Scientific name: Raphanus sativus var. radicula

Plant and variety history

Radish Seeds - Sparkler Radish belongs to a plant lineage long associated with Mediterranean and Old World garden agriculture. It was selected over generations for kitchen, market, ornamental, or herbal value and remains useful in modern home gardens.

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Customer experience

Reviews for Sparkler Radish Seeds

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Sparkler Radish Seeds

What to know before you plant

Seed success profile

Check this seed against your real growing conditions