Description
Annona muricata is a small evergreen tropical tree reaching 5 to 10 meters tall, known for its distinctive large, spiny green fruits. The leaves are glossy, dark green, and oblong, giving off a strong aroma when crushed.
The tree produces fragrant, yellow-green flowers that can appear singly or in clusters along the branches. Its fruit is oval to heart-shaped, with a soft, white, fibrous pulp that has a sweet-tart flavor reminiscent of a blend of strawberry and pineapple.
Soursop thrives in warm, humid climates with well-drained soil and full sun exposure. It is native to tropical regions of the Americas but is now cultivated widely in tropical and subtropical areas around the world.
Germination Guide
🌍 Tropical South Asia and Southeast Asia, native to China, Myanmar, Thailand, Vietnam, Cambodia, Indonesia, Malaysia, and the Philippines
Easy
Lagerstroemia speciosa is an ornamental deciduous tropical tree from Southeast Asia, prized for its vibrant pink to purple flowers and medicinal properties. Seeds germinate readily with hot water pre-treatment, showing germination rates of 50-65% within 2-8 weeks under optimal warm, moist conditions. This species is easily propagated from seed and valued for ornamental landscaping, timber production, and traditional herbal applications.
Germination
Germination time
Expect germination in
14 – 56 days
Temperature
Min 18°C
Ideal 25°C
Max 35°C
🌡️ Temperature alternation recommended
— Alternating temperature regime of 35/20°C (16/8 hour photoperiod) promotes rapid germination within 14 days. Optimal alternating regime is 35/22.5°C (16/8 h). Temperature range of 20-25°C achieves germination in 2-4 weeks.
Substrate moisture
💧💧 High
Sowing depth
Lightly covered
Seed Pre-treatment
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💧
Soaking — 24 hours
Soak seeds in water for 24 hours before planting to aid germination.
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🔨
Hot water scarification
Soak seeds in hot water (60-80°C) for 24 hours, then allow to cool. Alternatively, mechanical scarification by nicking seeds or light sanding improves germination. Hot water treatment records highest germination percentage (51-64%).
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❄️
Cold then warm stratification — 30 days at 5°C
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📋
Additional notes
After hot water treatment, place seeds in moist medium (paper towel or seed raising mix) inside sealed container in refrigerator for 30 days. Seeds are small with winged appendages; avoid deep planting. Seeds can be stored in airtight containers at room temperature for at least 2 years.
Substrate & Container
Recommended substrate
Seed raising mix, topsoil with coconut husk compost, coarse and fine sand (3:4:1:1 ratio), or moist paper towel
Recommended container
Seed trays, polybags, or sealed plastic containers with drainage holes
Growing Tips
Press seeds gently into soil surface with a thin soil layer (maximum 10mm) as seeds require light for germination. Seeds are positively photoblastic. Maintain consistent moisture without waterlogging. Use heat mats or warm indoor locations (20-25°C) for faster germination during cooler months. Remove plastic cover immediately after sprouting appears. Gradually acclimate seedlings from shade to morning sunlight. Seedlings grow slowly in first year (5-30cm) but accelerate after that. Young seedlings are vulnerable to cold; protect from temperatures below -1°C. Transplant seedlings to well-drained, humus-rich soil after 4-6 weeks. The species tolerates alkaline to slightly acidic pH (4.5-7.5). Regular fertilization ensures optimal growth as leaves become chlorotic under nutrient deficiency.
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