Fresh seeds to sow

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How to GerminateMomordica subangulata subsp. renigera

Momordica subangulata subsp. renigera

Spiny Bitter Gourd, Wild Bitter Melon, Teasel Gourd, Forest Bitter Cucumber
Native · Himalayan foothills and Southeast Asia (Thailand, Myanmar, Southern China, North India including Assam, Bangladesh)
Difficulty
moderada
Temperature
27°C ideal
Germination
7–14days
after pre-treatment
Success rate
Light
indiferente
Sow depth
1cm

Momordica subangulata subsp. renigera is a vigorous climbing vine native to tropical Asia, valued for its ornamental fruits and traditional culinary uses. This dioecious species produces distinctive warty to spiny fruits that mature from green to bright orange-red, making it as ornamental as it is functional. Seeds require warm, humid conditions to germinate successfully, reflecting the species' adaptation to tropical forest environments.

Before sowing

Soak
24 h Soak in warm (not boiling) water for 12-24 hours before planting to improve germination

Warm water soaking recommended to soften seed coat and break dormancy

Sowing

Substrate
Well-drained fertile soil with organic matter, pH 5.5-6.7
Depth
1cm
Temperature
27°C
Moisture
alta
Container
Individual seed pots or seed trays with humidity dome

What to expect

Step 1
Pre-treat the seed
Step 2
Sow at 1cm · 27°C
Day 7–14
Seedlings emerge

Tips

Maintain consistently warm soil (22-32°C ideal) and high humidity during germination using a heat mat and humidity dome. Sow seeds 1 cm deep and keep soil evenly moist but not waterlogged. Once seedlings develop 2-3 sets of true leaves, gradually harden off before transplanting. The species prefers well-drained, fertile soil in warm, humid conditions with full sun. Provide strong trellising as vines climb 2-3 meters rapidly. Seeds have a tough outer coat adapted to tropical conditions; warm water soaking enhances germination reliability.

Sources: Quinta dos Ouriques (2026), Butterfly Garden Seeds, World Flora Online, Plants of the World Online (Kew), Genetic Resources and Crop Evolution (Joseph et al. 2006, 2009)

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