Thai Sweet Basil

Basil

60d to harvest

Aromatic and intensely sweet from the first pinch—Thai Sweet Basil fills the garden with a fragrant, anise-citrus perfume and delivers tender leaves with a crisp, slightly succulent bite. The foliage is lush and upright, producing abundant, narrow leaves that hold their character for fresh use and are especially prized for bold, fragrant flavor in stir-fry style cooking and quick sauces. Grow Thai Sweet Basil for a steady harvest over the season, and enjoy its signature lift in every aromatic application.

Crop Dates

Milestone	Date
Start Indoors	Mar 6th
Last Frost	Apr 10th
Transplant / Sow Outdoors	May 29th
Harvest Begins	Jul 28th
Harvest Ends	Oct 28th

Crop Details

Trait	Value
Days to Maturity	60
Sun Requirements	Full Sun
Growth Habit	Upright
Support Needed	None
Planting Depth	Normal
Germination Temp (°F)	70
Min Soil Temp (°F)	60
Min Night Temp (°F)	50
Harden Off (days)	10

Recommended Companions

Lemon Gem Marigold

Moss Curled Parsley

California Wonder 300 TMR Pepper

Sweet Cherry Pepper

Italian Dark Green Parsley

Durango Red Marigold

Frequently Asked Questions

What pest or disease most often hits Ocimum basilicum (Thai sweet basil), and how do I stop it?

Watch for downy mildew and leaf-spot issues, especially in warm, humid weather with wet foliage. Improve airflow by thinning crowded plants and water at the soil line (not the leaves), then remove any heavily spotted leaves. If problems spread, apply a labeled fungicide for basil downy mildew/leaf-spot according to the product directions, and avoid harvesting or working plants when foliage is wet.

How often should I water Thai sweet basil during peak growth so it stays productive?

During the main growth phase, keep the root zone evenly moist but not soggy—water when the top 1 inch of soil feels dry. Expect roughly 1–2 deep waterings per week in typical summer conditions, increasing frequency during hot, windy spells. Consistent moisture prevents bitter leaves and helps basil keep pushing tender new growth.