Soursop Tree Seeds
The Soursop tree grows only in tropical countries that have high humidity and warm winters. Native to Mexico, Cuba, central America, the Carribean and northern South America. Temperatures below 41 degrees can cause damage to leaves and small branches. Temperatures below 37 degrees can be fatal to the tree. The Soursop tree grows 25 to 30 feet tall and produces a delicious fruit that is used to make fruit nectar, smoothies, fruit drinks, sorbets and ice cream flavorings. The Soursop belongs to the same family as the PawPaw.
Soil Type: Prefers deep, rich, well-drained, semi-dry soil. Commonly grown in acid and sandy soils.
Zones: 10 to 11
Germination Range: 40-50%
Stratification Requirement: Plant seeds at 1 inch depth in well-drained soil mix. Keep the soil moist, warm and with high humidity in bright light. Seed germinates in 15-30 days.
Indoor Planting: If your seeds require stratification or scarification – do the recommended pretreatment before planting indoors. Planting Instructions: Fill a container with seed starting mix to about ½ inch from the top. Place your seeds 1 inch to 1 ½ inches below the soil surface. Gently water your seeds to keep moist, not soaking wet. Heat & humidity is critical for germination. Germination may occur in 1 week or as long as 3 months (depending on the species). Place the seed container on a heat mat under growing light(s). Keep your growing lights on 14 hours per day. Keep your heat mat on 24 hours per day. Once your seeds germinate, move each seed into its own container under the growing lights and on the heat mat. Keep your seedlings indoors for 2-3 months before transplanting outdoors in the spring (May to June).
Outdoor Planting: If your seeds do not require stratification: the best time to plant tree and shrub seeds outdoors is after the last frost in your area (spring). In the Northern states – the best time to plant seeds outdoors is from May to June. If your seeds require pretreatment: you should plant your seeds outdoors before the ground freezes in your area (late September to early November). Your seeds will naturally stratify during the cold winter. Germination usually occurs in May or during the spring season.