Description
Solanum trilobatum is a tropical perennial plant with a climbing or scrambling growth habit, characterized by its spiny stems and irregularly lobed leaves. Also known as purple-fruited pea eggplant, it is a member of the nightshade family, which also includes potatoes and tomatoes. The plant produces small, star-shaped flowers that are typically purple or purplish-blue. These flowers develop into small, round, red or scarlet berries.
The seeds of Solanum trilobatum are small and flattened, contained within the pea-like fruits. They are typically about 3 millimeters in diameter. For successful germination, it is often recommended to soak the seeds in warm water for 12 to 24 hours before planting. They thrive in warm environments and well-draining soil, with germination usually occurring within a few weeks under optimal conditions.
Germination Guide
🌍 India, Sri Lanka, Indo-China, mainland Southeast Asia, Peninsula Malaysia
Easy
Solanum trilobatum, commonly known as Thuthuvalai in Tamil, is a thorny medicinal climbing shrub native to tropical South Asia. Belonging to the Solanaceae family, it is extensively used in traditional medicine systems including Ayurveda and Siddha, particularly for respiratory health and as a vegetable in South Indian cuisine.
Germination
Germination time
Expect germination in
7 – 18 days
Temperature
Min 22°C
Ideal 24°C
Max 30°C
Substrate moisture
💧 Medium
Seed Pre-treatment
-
💧
Soaking — 24 hours
Soak seeds for 12-24 hours before sowing; water imbibition improves germination rates
-
📋
Additional notes
Soaking in water for 12-24 hours is beneficial; some sources mention cowdung slurry soaking for 48 hours as traditional method
Substrate & Container
Recommended substrate
Sowing soil or seed-starting mix; well-drained loamy soil rich in organic matter
Recommended container
Grow bags, seed trays, nursery containers
Growing Tips
Keep soil moist but not waterlogged during germination. Provide full sun exposure (6+ hours daily). Plant requires warm tropical/subtropical conditions. Seeds have fully developed embryos at dispersal. Easily propagated from stem cuttings of half-ripe wood. Reaches maturity and flowering in 90-128 days after transplanting.
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