Ocimum basilicum var. thyrsiflora ‘Sweet Thai’
Overview
Uses: Fresh culinary herb, Thai and Southeast Asian cuisine, container gardens, patio planters, indoor herb growing
Benefits: Narrow glossy leaves with purple stems, distinctive spicy-anise flavor, ornamental purple flower spikes, dependable warm-season growth
USDA Hardiness Zones: 10–12 (grown as an annual in colder climates)
Sun: Full Sun
Life Cycle: Tender Perennial
Growth Habit: Upright, Mounding — branching stems with compact form
Bloom Color: Purple
Foliage Color: Green with Purple Stems
Mature Height: 16–20 inches
Mature Width: 10–14 inches
Bloom Season: Summer
Growth Rate: Fast
Summary
Sweet Thai Basil is prized for its bold, aromatic flavor and attractive purple stems that add visual interest to herb gardens and patio containers. The narrow leaves carry notes of anise and clove, making this variety a staple in many Southeast Asian dishes.
Unlike traditional sweet basil, Thai basil retains much of its flavor during cooking, making it well suited for stir-fries and warm preparations. Purple flower spikes emerge in summer, offering ornamental value and attracting pollinators.
Whether grown in garden beds or containers, this variety thrives in consistent warmth and full sunlight.
Care
Sweet Thai Basil Care
Provide at least 6–8 hours of direct sunlight daily for strong foliage production and steady growth.
Plant in well-drained soil enriched with organic matter. Maintain evenly moist soil without allowing roots to sit in saturated conditions.
Apply a light application of slow release fertilizer at planting to encourage balanced growth.
Pinch growing tips regularly to encourage branching and delay flowering if maximum leaf production is desired.
Protect plants from temperatures below 60°F, as this variety prefers consistently warm conditions.
Container Growing
Sweet Thai Basil performs well in patio containers with proper drainage. Container-grown plants will require more frequent watering during warm weather.
Use high-quality potting mix and ensure containers receive full sunlight for best flavor and growth.
Plants hardy in the ground may require winter protection when grown in containers in colder zones.
Size
What Size is the Sweet Thai Basil for Sale Online?
Plants ship in a greenhouse-grade grow pot and are actively growing at the time of shipment. Each plant is well-rooted and appropriately sized for its container. If you have specific sizing questions, please contact us for additional details.
How Large Does Sweet Thai Basil Grow?
Mature plants typically reach 16–20 inches tall and spread 10–14 inches wide, forming a compact, upright mound.
Additional Information
What are some common names for this plant?
This variety is commonly known as Thai Basil or Sweet Thai Basil.
How does Thai basil differ from traditional sweet basil?
Thai basil has a spicier profile with notes of anise and clove and tends to hold its flavor better during cooking than traditional sweet basil varieties.
Where can I explore more basil and culinary herbs?
Browse our collections of
Basil Plants
and
Herbs
to discover additional varieties for garden beds and containers.
Can Sweet Thai Basil be grown indoors year-round?
Yes. With bright light and warm temperatures, this variety adapts well to indoor container growing, making it suitable for windowsill herb gardens.
