Basil Seeds,
Siam Queen Thai

Start Siam Queen Thai basil seeds indoors 4-6 weeks before the last frost date in your area. Transplant seedlings outdoors when nighttime temperatures consistently stay above 50 F. In warmer climates, seeds can also be directly sown into garden beds once the danger of frost has passed. This basil thrives in hot summer weather, so ensure the soil is warm for optimal growth. If you're unsure of your last frost date, consult our blog post 'Our Experts Answer Questions, Share Resources.'

Sow seeds 1/4 inch deep in seed-starting trays or directly into prepared garden soil after the frost has passed. Keep the soil temperature between 70 to 85°F for quick germination, which typically takes 6 to 10 days. Space plants 8 to 12 inches apart to allow for airflow and adequate growth. If starting indoors, harden off seedlings over 7 to 10 days before transplanting them outdoors to prevent shock.

Water Siam Queen Thai basil consistently, keeping the soil moist but not waterlogged. Enrich the soil with compost or fertilize every couple of weeks to encourage better leaf production. Pinch back the growing tips frequently to delay flowering and promote a bushier plant. This basil can also be grown in containers, provided the pot has good drainage and the plant gets full sun. If allowed to flower later in the season, the blooms will attract pollinators such as bees and butterflies. Protect against pests like aphids and whiteflies using organic pest control methods.

• Flower heads mature progressively from the bottom of the stem to the top.
• When the bottom seed head starts to turn brown, the stem can be cut and allowed to dry away from direct sun in a well-ventilated area.
• Rub dried raceme over a fine wire mesh and winnow off the chaff.
• Place chaff in a bowl and carefully swirl contents around. Seeds will gather at the bottom of the bowl.
• Tip the bowl so that the chaff can be discarded and blow the rest out carefully.