How to Buy Seeds in Thailand
Thailand is Southeast Asia's hybrid vegetable seed hub — a top-five global exporter of hybrid vegetable seed and, at the same time, a large importer of elite parent lines and finished F1 lots. This guide covers what a commercial buyer actually needs: the DoA import licence sequence, phytosanitary and ISTA documentation, realistic landed cost bands by crop, planting windows for the Central Plain, Isan and the northern highlands, and how to reach qualified breeders and producers without publishing an open supplier directory.
Do I need a DoA licence to import seed into Thailand?
Yes. Every commercial seed consignment needs an import permit from the Plant Quarantine Sub-division of the Department of Agriculture, applied for by a Thai-registered importer of record, plus an origin-country phytosanitary certificate. First-time applications typically take 2–4 weeks; repeat lots clear faster.
Who buys seed in Thailand
Vegetable seed companies, hybrid-maize distributors, agri-input chains, greenhouse operators and export-fruit programmes.
Climate & planting seasons
Tropical — Central Plain and Northeast (Isan) drive vegetable and hybrid-maize demand; highlands support cooler crops.
Wet-season May–October, dry-season November–April; year-round vegetable in the North.
Seed import compliance
Regulator: Department of Agriculture (DoA), Plant Quarantine Service
Thailand controls seed imports under the Plant Quarantine Act B.E. 2507 (as amended) and the Seed Act B.E. 2518. Commercial consignments need a DoA import licence/permit issued by the Plant Quarantine Sub-division, an origin-country phytosanitary certificate declaring the DoA's additional declarations for the species, an ISTA orange international seed-lot certificate for germination and purity, and treatment records where the species is prohibited-conditional. Seed for propagation is inspected at the point of entry and may be released, treated, detained for post-entry quarantine or re-exported. Thailand is simultaneously one of the world's largest hybrid vegetable seed producers and re-exporters, so many buyers combine an import lot with local contract multiplication.
SeedMatchGroup coordinates every document with the supplier so the buyer receives a compliant, port-ready lot.
- 1. Confirm the species status
Check whether your species is unrestricted, prohibited-conditional or prohibited under the DoA plant-quarantine species list. Most vegetable and field-crop seed sits in the conditional category and is importable with a permit plus additional declarations.
- 2. Apply for the DoA import permit
The importer of record (a Thai-registered entity) files with the Plant Quarantine Sub-division, Department of Agriculture, stating species, variety, quantity, origin, intended use (commercial sale, trial or multiplication) and port of entry. Allow 2–4 weeks for a first-time application, faster for repeat lots.
- 3. Register or declare the variety
Commercial sale requires the variety to be listed under the Seed Act; unlisted varieties can still be imported for controlled trial or for contract multiplication and re-export, but the intended use must match the permit.
- 4. Get the origin phytosanitary certificate
The exporting NPPO issues a phytosanitary certificate carrying the exact additional declarations Thailand requires for that species (typically freedom from named seed-borne viruses, bacteria and nematodes, plus treatment details).
- 5. Attach the ISTA orange certificate
An ISTA orange international seed-lot certificate confirming germination, purity and the sampled lot number is standard for commercial consignments and is what most Thai buyers use to enforce quality on arrival.
- 6. Ship, declare and clear
Sea freight moves through Laem Chabang; air freight for parent lines and samples moves through Suvarnabhumi. Customs declaration references the permit number; the plant-quarantine officer inspects and samples the lot at the port.
- 7. Post-entry handling
Lots may be released, treated, or held for post-entry quarantine and grow-out depending on species and origin. Build this into the planting calendar — it is the most common cause of a missed sowing window.
- 8. Label and distribute
Seed offered for sale must carry Seed Act labelling: species, variety, lot number, germination, purity, treatment and test date. Keep the ISTA certificate on file against the label claim.
Crop calendar & variety notes — Thailand
| Crop | Sowing window | Harvest | Notes |
|---|---|---|---|
| Chilli (F1 hot & sweet) | Oct–Dec (dry season), May–Jun (wet) | Feb–Jun / Aug–Nov | Isan and Central Plain. Anthracnose and CMV/ChiVMV tolerance is decisive; dry-season crops carry the export premium. |
| Tomato (fresh & processing) | Oct–Dec | Jan–Apr | Cool-dry window in the North and Northeast. Heat-set indeterminate hybrids with TYLCV and bacterial-wilt tolerance for shoulder plantings. |
| Watermelon & melon | Nov–Feb and Jun–Jul | Feb–May / Sep–Oct | Two clean cycles a year; premium Japanese/Korean muskmelon genetics go into protected structures near Bangkok and Chiang Mai. |
| Hybrid maize (field & sweet) | Apr–Jun (main), Nov–Dec (irrigated) | Aug–Oct / Feb–Mar | Isan and the western uplands. Downy mildew resistance is the primary screen; sweet-corn contracts run year-round under irrigation. |
| Leafy greens & brassicas | Year-round (highlands), Oct–Feb (lowland) | 30–60 days after sowing | Chiang Mai, Chiang Rai and Petchabun highlands support continuous protected production. |
| Papaya & tropical fruit seed | Feb–Apr and Aug–Oct | 9–12 months from planting | PRSV tolerance drives variety choice; nursery raising precedes field transplant by 6–8 weeks. |
Indicative cost bands
Indicative ranges for planning only — actual pricing depends on variety, resistance package, volume and Incoterms, and is confirmed in your matched quotes.
| Line item | Indicative range | Notes |
|---|---|---|
| F1 hybrid chilli seed | USD 900–2,600 / kg (approx. THB 32,000–92,000) | Wide band — disease-resistance stack and pungency class drive the price more than volume. |
| F1 hybrid tomato seed | USD 1,200–3,500 / 10,000 seeds | Greenhouse indeterminate types sit at the top of the band; open-field determinate types at the bottom. |
| F1 watermelon / melon seed | USD 400–1,800 / kg | Seedless triploid and premium muskmelon carry the highest prices and the longest lead times. |
| Hybrid maize seed | USD 3.5–9.0 / kg | Volume commodity; freight and treatment are a meaningful share of landed cost. |
| Sea freight & clearance (LCL) | USD 900–2,400 per consignment | Laem Chabang, door-to-door including handling, quarantine inspection and broker fees. |
| Air freight (samples & parent lines) | USD 8–18 / kg, min. USD 250 | Suvarnabhumi; used for trial packs, parent seed and anything on a tight sowing window. |
Lead times
7–14 days end-to-end by air once the permit is live — the fastest route to a variety decision.
18–30 days door-to-door: 10–18 days sea freight from Japan, Korea, China or India plus 5–10 days permit-referenced clearance.
35–55 days door-to-door: 28–42 days sea freight plus clearance; air freight compresses this to 7–12 days at a cost premium.
One to two full seasons (6–14 months) from parent-line import to a certified finished lot — plan the permit at least a season ahead.
Where Thailand buyers source seed
- Japan
- Korea
- Netherlands
- Israel
- India
- China
How SeedMatchGroup sources for Thailand
SeedMatchGroup is a private sourcing platform — buyers never see a directory of suppliers. Share your crop plan, tonnage and delivery window, and a dedicated sourcing specialist working with our proprietary technology returns a curated shortlist of independent breeders and producers for Thailand within one business day. All communications stay routed through SeedMatchGroup.
Frequently asked questions — buying seeds in Thailand
- Do I need a DoA licence to import seed into Thailand?
- Yes. Every commercial seed consignment needs an import permit from the Plant Quarantine Sub-division of the Department of Agriculture, applied for by a Thai-registered importer of record, plus an origin-country phytosanitary certificate. First-time applications typically take 2–4 weeks; repeat lots clear faster.
- Which documents travel with a Thai seed consignment?
- The DoA import permit, the origin phytosanitary certificate carrying Thailand's additional declarations for that species, an ISTA orange international seed-lot certificate for germination and purity, treatment records where applicable, and the commercial invoice and packing list referencing the permit number.
- Which ports handle seed imports into Thailand?
- Laem Chabang handles almost all sea-freight seed containers, with some legacy volume through Bangkok (Klong Toey). Suvarnabhumi Airport handles air-freight samples, trial packs and parent lines where the sowing window is tight.
- How long does seed delivery to Thailand take?
- Air-freighted samples land in 7–14 days end-to-end. Commercial lots from Japan, Korea, China or India run 18–30 days door-to-door; from Europe or Israel by sea, 35–55 days. Add a season if the lot needs post-entry quarantine or grow-out.
- What does hybrid vegetable seed cost in Thailand?
- F1 chilli typically runs USD 900–2,600/kg, F1 tomato USD 1,200–3,500 per 10,000 seeds, watermelon and melon USD 400–1,800/kg, and hybrid maize USD 3.5–9.0/kg. Disease-resistance stacking moves the price far more than order volume. Landed cost adds USD 900–2,400 per LCL consignment.
- Does the variety need to be registered before I can sell it?
- Commercial sale requires the variety to be listed under the Seed Act B.E. 2518. Unlisted varieties can still be imported for controlled trial or for contract multiplication and re-export, but the intended use has to match what the permit states.
- When should I plant in Thailand?
- The dry season (November–April) carries the main chilli, tomato, watermelon and melon crops, with the export premium. Wet-season plantings from May run higher disease pressure and need tolerant genetics. Northern highlands support year-round leafy greens and brassicas under protection.
- Can I source seed produced in Thailand rather than importing?
- Yes — Thailand is a top-five global exporter of hybrid vegetable seed, and contract multiplication with a Thai producer is often the better route for volume. Expect one to two seasons from parent-line import to a certified finished lot.
- How does SeedMatchGroup source seed for Thai buyers?
- Share the crop plan, tonnage, target planting window and destination province. A dedicated sourcing specialist returns a curated shortlist of independent breeders, producers and multipliers — usually within one business day. There is no public supplier directory and all communication stays routed through SeedMatchGroup.
Request matched seed quotes for Thailand
Private, no supplier directory, no buyer fees. A dedicated sourcing specialist follows up.
Financing questions, answered
Financing, projects & related guides
Curated calculators, country buying guides and a pre-filled RFQ so you can move from research to a comparable-offer brief in one step.
Open a comparable-offer RFQ pre-filled for Seeds for Thailand. A dedicated sourcing specialist opens it to qualified independent global suppliers.
Open pre-filled RFQPrivate by default · Free for buyers · No supplier directory exposed.