About
Thai basil is the liquorice-mint square-stemmed workhorse of stir-fries and phở—purple stems, pointed leaves, and flower spikes bees treat like a runway. Distinct from sweet basil; do not substitute unless you enjoy flavor chaos. Grow spring through fall; bolts in heat but keeps producing if you steal tips. Frost ends the party—extend with row cover or pots. Full sun, rich well-drained soil, steady moisture. Wilts fast in pots—mulch and check daily in August. Seed indoors after last frost or direct sow warm soil; cuttings root in water in a week if you forget to label them. Pinch tips and flower spikes for continuous kitchen harvest until frost stops growth.
Permaculture Functions
- Edible: Ocimum basilicum var. thyrsiflorum liquorice spikes strip into beef salads and chili oil -- harvest before woodiness because stems toughen faster than Italian sweet types.
- Pollinator: Purple whorled blooms spike late summer basil rows -- if you dare delay pesto cuts for bee forage gaps.
- Pest Management: Eugenol-rich leaf volatiles mask tomato-to-moth cues -- when tight tomato-basil guilds breathe together in humid frames.
Field Observations
- No field observations yet
Companion Planting
- Cold wet soil at germination
- Dense shade
Threats & Pressure