Green tea seeds

When sourcing green tea seeds, the germination rate is the most critical metric; high-quality seeds should have a viability rate of at least 75-85%. Buyers should request freshness certificates, as tea seeds are recalcitrant and lose viability quickly if not stored correctly. Ensure the seeds are plump, heavy, and dark brown in color. A common field test is the 'sink test': place seeds in water; those that sink are generally viable, while floaters are likely hollow or dried out. Additionally, verify the moisture content, which should be maintained around 20-30% during transport to prevent embryo death.

Buyers must specify the botanical variety, typically Camellia sinensis var. sinensis (small leaf, cold-hardy) or var. assamica (large leaf, tropical). Technical specs should include seed diameter (typically 12-18mm) and purity levels (98%+). If the goal is oil extraction rather than planting, focus on oil content percentage (usually 20-30%). For planting, ensure the supplier provides cultivar-specific data regarding altitude suitability and pest resistance to ensure the seeds match your local climate conditions.

Cross-border trade of seeds is strictly regulated. Every shipment must be accompanied by a Phytosanitary Certificate issued by the exporting country's national plant protection organization (NPPO) to prove the seeds are free from quarantine pests and diseases. Depending on the destination (e.g., EU, USA, or Southeast Asia), you may also need a Non-GMO Declaration and an Import Permit. Ensure the packaging is clearly labeled with the botanical name, lot number, and origin to avoid customs seizures.

The biggest risk is loss of viability due to temperature fluctuations and dehydration. To mitigate this, use refrigerated containers (reefers) maintained at 5°C to 10°C and specify breathable packaging (like gunny bags or perforated PE bags) rather than airtight plastic. Avoid long sea freight if possible; air freight is highly recommended for high-value planting seeds to minimize the time out of controlled environments.

Utilize the Secured Trading Service on Made-in-China.com to ensure payments are only released upon confirmation of document receipt. When negotiating, insist on a retention money clause where a portion of the payment is held until a germination test is completed upon arrival. Always request a pre-shipment inspection (PSI) by a third party like SGS to verify the quantity and phytosanitary documentation before the balance is paid.

Before placing a bulk order, consult a local customs broker to verify the specific HS Code (typically 1209.99 or 1207.99) requirements in your country. Some regions have strict Invasive Species Acts that may restrict certain Camellia varieties. Ensure the supplier provides a Certificate of Origin to potentially benefit from Preferential Tariff Rates under bilateral trade agreements (e.g., RCEP or ASEAN-China FTA).