Basilius Magnus

Growing Temp 70°F – 90°F
Days to Maturity 70-90 days

Ease of Cultivation and Rich Flavor: Thai Sweet Large Leaf basil is a popular variety known for its large, vibrant green leaves and distinctive sweet, spicy flavor. This herb is relatively easy to grow, thriving in warm, sunny conditions with regular watering. It’s an essential ingredient in Thai cuisine, lending its aromatic notes to dishes like curries, soups, and salads, making it a favorite among culinary enthusiasts.

Direct Sowing: For direct sowing, plant Thai Sweet Large Leaf basil seeds outdoors after the last expected frost when the soil temperature is consistently above 70°F. Sow the seeds about ¼ inch deep and spaced 12 inches apart in rows that are 18–24 inches apart. Germination typically occurs within 7–14 days. Keeping the soil consistently moist is vital during this period to ensure robust growth. Once the seedlings are established, thin them to provide adequate airflow and prevent overcrowding. You can begin harvesting leaves when they reach approximately 3–4 inches long, taking care to remove no more than one-third of the plant at a time.

Early Sowing for Seedlings: To get an early start, sow Thai Sweet Large Leaf basil seeds indoors 6–8 weeks before the last expected frost. Use seedling trays filled with quality potting mix, placing 2-3 seeds per cell. Maintain a temperature of 70–80°F to encourage germination. Once the seedlings develop their first true leaves and the danger of frost has passed, transplant them into the garden. Space the transplants about 12 inches apart in rows that are 18–24 inches apart. Water them thoroughly after planting and consider adding mulch around the base to help retain moisture and suppress weeds.

Harvesting: To determine when Thai Sweet Large Leaf basil is ready for harvest, look for large, healthy leaves that are aromatic and lush. You can start harvesting once the plants have sufficient foliage, typically within 70-90 days after sowing. It’s best to pick the outer leaves first to encourage bushier growth. Regular harvesting promotes continued production and helps prevent flowering, which can affect the flavor of the leaves. For the best taste, harvest in the morning when the essential oils are most concentrated.