Free U.S. seed shipping $25+. Seeds ship free at the threshold. Storefront goods, pantry finds, books & local goods are being added.

New seeds, Main Street specials, and storefront finds update as the market grows.

Sweet Thai

Scientific name Ocimum basilicum

Read customer reviews
Alliance Of Native Seedkeepers  |  SKU: HB45

Seed packet & garden essentials

What to know before you plant

View complete growing & care facts
500 minimum seeds per packet
  • Maturity60-69 Days · First usable harvest varies by crop and season; see packet and field notes
  • Growth habitUpright/Erect · Annual · 19–24 in tall
  • Best useSoutheast Asian cooking, containers, and warm-season harvest
  • Flavor & characteranise-clove aroma with a firm leaf
  • Germination5–10 Days days · 70–85 °F
  • Seed preparationNo special treatment; warmth and fresh seed matter most
  • SunFull sun
  • Support & spacingNo-Support · space 18 in · rows 18 in
  • Container fitGood with drainage and adequate soil volume
  • Water needsModerate
  • SoilLoamy · pH 6.5–7.0
  • Planting seasonLate Spring · blooms Summer · Tender
$200 USD

Pickup available at Bertie County Seeds

Usually ready in 2-4 days
Secure checkout Details
Generic
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 to Intermediate
Germination difficulty Easy
Preparation before sowing
No special treatment; warmth and fresh seed matter most
Germination speed
Typical — usually 7–21 days
Growing complexity
Easy
Patience and timing
Varies by crop, cultivar, and season
Is this seed a good match for your experience?
Expected germination
5–10 Days
Germination temperature
70–85 °F
Stratification
None
Scarification
None
Pre-soaking
None
Light during germination
Cover lightly; bright light immediately after emergence
Germination pattern
Reliable in warm soil
Transplant sensitivity
Transplants well while young
Starting method
Cataloged for indoor starting or transplanting; follow the hardening-off guidance.
Best chance of success
No special treatment; warmth and fresh seed matter most
What to expect

Expect 5-14 days near 70-85°F. Cover lightly; bright light immediately after emergence. Reliable in warm soil.

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.

Browse AONSK seed-starting and garden guides

Build a garden-fit plan

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

Sweet Thai

Sweet Thai seeds belong in a garden plan built around timing, soil, and the way the harvest will actually be used. Sweet Thai is best suited to Southeast Asian cooking, containers, and warm-season harvest. Its defining kitchen character is anise-clove aroma with a firm leaf.

In our seed room, we do not treat a packet as a decoration or a promise detached from conditions. We look at the lot, the germination window, the crop family, the plant habit, and the point at which the harvest is at its best. For Sweet Thai, that means sowing 1/4 inch deep, maintaining even moisture without waterlogging, and giving plants enough room to express the form named on the packet.

Thai basil is a culinary form of Ocimum basilicum selected for aroma, flowering habit, and heat-season use. The cultivar name describes a garden type, not a claim of exclusive regional ownership.

Start with fresh seed, write down the sowing date, and judge the crop across the whole planting rather than one exceptional plant. A reliable variety is not one that survives neglect by accident. It is one that answers good care with a useful harvest, then gives the seedkeeper enough honest information to decide whether it deserves another season.

Minimum Seed Count: 500 seeds

Additional variety notes

Variety overview

Sweet Thai seeds belong in a garden plan built around timing, soil, and the way the harvest will actually be used. Sweet Thai is best suited to Southeast Asian cooking, containers, and warm-season harvest. Its defining kitchen character is anise-clove aroma with a firm leaf. In our seed room, we do not treat a packet as a decoration or a promise detached from conditions. We look at the lot, the germination window, the crop family, the plant habit, and the point at which the harvest is at its best. For Sweet Thai, that means sowing 1/4 inch deep, maintaining even moisture without waterlogging, and giving plants enough room to express the form named on the packet. Thai basil is a culinary form of Ocimum basilicum selected for aroma, flowering habit, and heat-season use. The cultivar name describes a garden type, not a claim of exclusive regional ownership. Start with fresh seed, write down the sowing date, and judge the crop across the whole planting rather than one exceptional plant. A reliable variety is not one that survives neglect by accident. It is one that answers good care with a useful harvest, then gives the seedkeeper enough honest information to decide whether it deserves another season.

Every recorded growing detail

Complete growing & care facts

Continue to the garden-fit planner

Plant identity

Minimum seed count 500 seeds
Seed product profile Culinary herb
Scientific name Ocimum basilicum
Also known as Basil, Basil Seeds - Sweet Thai
Life cycle Annual
Botanical family Lamiaceae
Reproductive type Open-Pollinated (OP)
Heritage qualifiers Heirloom
Native to the United States Domesticated Plant
Domestication note Africa – East / Southern Africa

Seed success and gardener experience

Gardener experience Beginner to IntermediateLevel 1 of 5
Germination difficulty EasyLevel 1 of 5
Preparation before sowing No special treatment; warmth and fresh seed matter most
Stratification None
Scarification None
Pre-soaking None
Light during germination Cover lightly; bright light immediately after emergence
Germination pattern Reliable in warm soil
Growing complexity Easy
Transplant sensitivity Transplants well while young
First harvest or bloom Varies by crop, cultivar, and season
Best chance of success No special treatment; warmth and fresh seed matter most

Timing and climate

Days to maturity 60-69 Days
Germination 5–10 Days
Germination temperature 70–85 °F
Planting season Late Spring
Bloom season Summer
Frost tolerance Tender
Sunlight Full sun
Water needs Moderate

Site, soil, and space

Soil type Loamy
Preferred soil pH 6.5–7.0
Seed depth 1/4 in
Plant spacing 18 in
Row spacing 18 in
Mature height 19–24 in
Growth habit Upright/Erect
Support needed No-Support
Suitable growing locations In-ground bed, Raised bed, Containers, Greenhouse, High Tunnel, Indoor growing, Community garden

Crop-specific details

Flavor profile anise-clove aroma with a firm leaf

Garden-fit planning for this variety

Will Sweet Thai fit your garden?

Check container space, harvest use, life cycle, light, moisture, and sowing method.

Rules-based · no AI
Questions for this culinary herb seed
Seed-starting fit and patience
Recorded product profileBeginner to IntermediateEasyRead 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 range6.5–7.0
Water needsModerate
LightFull sun

Use a current laboratory soil test

Soil-test interpreter

Compare your report with this product's listed pH target: 6.5–7.0.

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 Sweet Thai from seedPreparation, timing, depth, germination, transplanting, spacing, and early care

Variety-specific germination notes

Expect 5-14 days near 70-85°F. Cover lightly; bright light immediately after emergence. Reliable in warm soil.

Complete sowing and planting guidance

Sow 1/4 inch deep during after frost when soil and nights are warm. Space plants 8-12 inches apart with 18-24 inches between rows. Germination commonly begins in 5-14 days near 70-85°F. Provide full sun and even moisture without waterlogging.
How to grow this specific varietyLight, water, fertility, support, spacing, airflow, crop behavior, and season-long care

Variety-specific growing notes

Use a fine, well-drained seed-starting mix or a carefully prepared garden bed. No special treatment; warmth and fresh seed matter most. Sow 1/4 inch deep and follow this light rule: Cover lightly; bright light immediately after emergence. Keep the seed zone moist but never airless. After emergence, provide bright light and circulation so stems remain sturdy. Thin or transplant to 8-12 inches, leaving 18-24 inches between rows. The plant habit is bushy aromatic annual, generally reaching 12-30 inches. Water according to the root zone rather than the surface appearance. Harvest regularly where leaf production is the goal, but reserve clearly labeled plants when you intend to save seed.

Complete growing guide

Use a fine, well-drained seed-starting mix or a carefully prepared garden bed. No special treatment; warmth and fresh seed matter most. Sow 1/4 inch deep and follow this light rule: Cover lightly; bright light immediately after emergence. Keep the seed zone moist but never airless. After emergence, provide bright light and circulation so stems remain sturdy. Thin or transplant to 8-12 inches, leaving 18-24 inches between rows. The plant habit is bushy aromatic annual, generally reaching 12-30 inches. Water according to the root zone rather than the surface appearance. Harvest regularly where leaf production is the goal, but reserve clearly labeled plants when you intend to save seed.
Practical field and garden tipsExtra techniques, timing adjustments, and observations that improve success
Keep a written record of sowing date, soil temperature, first emergence, thinning, first harvest, flowering, and seed maturity. Herbs are often judged only by aroma, but plant architecture, bolt timing, winter survival, disease tolerance, and labor at harvest decide whether a variety belongs in a working garden. Do not fertilize aromatic herbs into soft, watery growth. Feed the soil according to a test and let the plant keep its character.
Harvest, storage, uses, and benefitsWhen and how to harvest, ways to use the crop, storage, culinary value, habitat value, and garden roles

Harvest and use notes

Harvest for Southeast Asian cooking, containers, and warm-season harvest. Use the crop at its intended stage, and reserve only healthy true-to-type plants for seed. Basil is insect-pollinated and varieties can cross. Isolate flowering varieties or separate bloom time, save from many healthy true-to-type plants, and harvest seed heads when dry and brown.

Uses and benefits

Best for Southeast Asian cooking, containers, and warm-season harvest. Flavor and aroma: anise-clove aroma with a firm leaf. Flowers may support pollinators when the crop is allowed to bloom; harvest use depends on the species and cultivar.
Seed saving and carrying the variety forwardPollination, isolation, selection, harvest, cleaning, drying, and storage
Basil is insect-pollinated and varieties can cross. Isolate flowering varieties or separate bloom time, save from many healthy true-to-type plants, and harvest seed heads when dry and brown.
Common pests, diseases, and growing problemsIdentification, prevention, crop-safe response, and when intervention is justified

Variety troubleshooting summary

Q: When should I sow Sweet Thai?
A: After frost when soil and nights are warm. Match the crop to soil temperature and night temperature rather than relying only on a calendar date.

Q: How long does germination take?
A: Usually 5-14 days near 70-85°F, though seed age, moisture, depth, and species matter.

Q: Can it grow in a container?
A: Yes when the container has drainage and enough soil volume. Compact basil, parsley, chives, chamomile, thyme, and many onions are especially useful in containers; tall dill, fennel, and leeks need more depth and space.

Q: Can I save seed?
A: Yes. Basil is insect-pollinated and varieties can cross. Isolate flowering varieties or separate bloom time, save from many healthy true-to-type plants, and harvest seed heads when dry and brown.

Q: Is this page medical advice?
A: No. Traditional or herbal uses are presented as cultural and garden context. Use qualified medical guidance for health decisions.

Complete pest and problem guide

The most common failures are cultural: buried tiny seed, stale seed, waterlogged mix, weak light, crowded seedlings, root disturbance in taprooted herbs, or a climate mismatch. Aphids, spider mites, caterpillars, leaf spots, damping-off, and root rots may occur. Identify the organism or condition before treating. Improve airflow, irrigate the soil instead of the foliage, sanitize containers, and avoid keeping woody Mediterranean herbs continuously wet.
Questions gardeners ask about this seedProduct-specific answers for sowing, care, harvest, use, and seed saving
Q: When should I sow Sweet Thai?
A: After frost when soil and nights are warm. Match the crop to soil temperature and night temperature rather than relying only on a calendar date.

Q: How long does germination take?
A: Usually 5-14 days near 70-85°F, though seed age, moisture, depth, and species matter.

Q: Can it grow in a container?
A: Yes when the container has drainage and enough soil volume. Compact basil, parsley, chives, chamomile, thyme, and many onions are especially useful in containers; tall dill, fennel, and leeks need more depth and space.

Q: Can I save seed?
A: Yes. Basil is insect-pollinated and varieties can cross. Isolate flowering varieties or separate bloom time, save from many healthy true-to-type plants, and harvest seed heads when dry and brown.

Q: Is this page medical advice?
A: No. Traditional or herbal uses are presented as cultural and garden context. Use qualified medical guidance for health decisions.
History, provenance, and cultural contextWhat is documented, what is reported, what remains uncertain, and how the variety reached gardeners

Scientific name: Ocimum basilicum

Provenance summary

Thai basil is a culinary form of Ocimum basilicum selected for aroma, flowering habit, and heat-season use. The cultivar name describes a garden type, not a claim of exclusive regional ownership.

Plant and variety history

Thai basil is a culinary form of Ocimum basilicum selected for aroma, flowering habit, and heat-season use. The cultivar name describes a garden type, not a claim of exclusive regional ownership.

Source and record notes

https://extension.umn.edu/gardening-minnesota/growing-herbs
https://extension.psu.edu/growing-herbs-in-the-garden
https://content.ces.ncsu.edu/extension-gardener-handbook/16-vegetable-gardening

Continue planning

Related seeds, collections, and growing guides

Explore the full collection
Heirloom Basil Seeds for Culinary and Garden UseExplore the full collection →
Sweet Genovese Basil

Sweet Genovese Basil

Sweet Genovese Basil: pesto, sauces, fresh slicing, and repeated leaf harvest

Italian Large Leaf

Italian Large Leaf

Italian Large Leaf: pesto, sauces, fresh slicing, and repeated leaf harvest

Lemon Basil

Lemon Basil

Lemon Basil: tea, salads, fish dishes, and fragrant container gardens

Helpful growing guides for this variety

Customer experience

Reviews for Sweet Thai

Customer Reviews

Based on 2 reviews
50%
(1)
0%
(0)
0%
(0)
0%
(0)
50%
(1)
L
Lisa Strader (United States)

Great germination rates and sprouted very quickly!

Hi Lisa, we're so glad to hear about the great germination! Thanks for sharing your experience with the Thai basil seeds. Happy gardening!

S
Sharon Wilkerson (United States)

Absolutely nothing I bought has germinated.

Hi Sharon! Having nothing from your order germinate is very strange. Please contact us so we can figure out why that might have happened and work towards a solution.

Keep planning

Build the rest of your garden.

Compare related varieties, add practical supplies, or browse dependable value picks.

Grow alongside itPollinator companionsBrowse flowers and plants that support a lively garden. Complete the setupGarden suppliesFind labels, tools, and practical seed-starting goods.Compare choicesCompare Heirloom Basil Seeds for Culinary and Garden UseSee this product alongside the closest related choices.Budget-friendly picksShop the On Sale collectionSee current values without being sent to a sign-in screen.