Shiso Herb (Perilla) – Ohba

Shiso Herb (Perilla) – Ohba

• Growing Temp 65°F – 75°F

• Days to Maturity 60-90 days

Ease of Cultivation and Culinary Use: Ohba, or Japanese shiso, is a beloved culinary herb known for its broad, green leaves and unique flavor profile that combines elements of mint, basil, and anise. It is relatively easy to grow, thriving in well-drained soil and favoring full sun to partial shade. Ohba is commonly used in Japanese dishes, such as sashimi, salads, and as a garnish, adding a refreshing taste that enhances many recipes.

Direct Sowing: For direct sowing, plant Ohba seeds outdoors in the spring after the last frost. Sow the seeds about ¼ inch deep and space them 12-18 inches apart to allow for their growth. Germination typically occurs within 7–14 days, so keeping the soil consistently moist during this period is crucial for successful sprouting. Ensure the plants receive ample sunlight for robust growth and vibrant leaf color.

Early Sowing for Seedlings: To start early, sow Ohba seeds indoors 6–8 weeks before the last expected frost. Use seedling trays filled with a quality potting mix, lightly covering the seeds with soil. Maintain a temperature around 70°F for optimal germination. Once the seedlings have developed several true leaves and the risk of frost has passed, transplant them outdoors, ensuring adequate spacing to support healthy growth.

Harvesting: To determine when Ohba is ready for harvest, look for healthy plants with lush green leaves, typically within 60-90 days of planting. You can start harvesting once the leaves are fully formed and vibrant. The best time to pick is in the morning after the dew has dried, as this is when the essential oils are most concentrated. Regular harvesting encourages bushier growth and ensures a continuous supply of flavorful leaves throughout the growing season.