Thai Basil

Ocimum basilicum var. thyrsiflora, Lamiaceae

Zones

10a–11b

Layer

Herbaceous

Lifespan

Annual

Growth

Fast

Guild Roles

ProducerPest Confuser

Growing Conditions

Sun

Full Sun (optimal)

Water

Moderate

Soil pH

6 – 7

Tolerances

Drought

Frost

Heat

Pest Resistance

Disease Resist.

Companion Plants

PeppermintMentha x piperita

Pest DeterrentPollinator Sharing

ChayaCnidoscolus aconitifolius

Pest DeterrentPollinator Sharing

Stinging NettleUrtica dioica

Nutrient AccumulationBeneficial Insect Habitat

Curly EndiveCichorium endivia Crispum

Pest DeterrentPollinator Sharing

Sweet CornZea mays var. saccharata

Pest DeterrentWind Protection

Antagonistic Plants

Lemon BasilOcimum x citriodorum

Different basil varieties can cross-pollinate and compete for resources, potentially losing varietal purity

Pencil CactusEuphorbia tirucalli

Euphorbia species produce latex compounds that can inhibit growth of tender herbs like basil

Mountain MahoganyCercocarpus montanus

Mountain mahogany produces tannins and creates shade that inhibits Thai basil growth

Uses

Functions

FoodPest Deterrent

Edible Parts

Leaves

Common Questions

What zones does Thai Basil grow in?

Thai Basil grows in USDA hardiness zones 10a through 11b.

What are good companion plants for Thai Basil?

Good companions for Thai Basil include Peppermint, Chaya, Stinging Nettle, Curly Endive, Sweet Corn.

Design guilds with Thai Basil and see companion relationships visually.

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