Ceiba pentandra, commonly known as kapok tree or silk-cotton tree, is a large tropical deciduous tree native to Central America, northern South America, and West Africa. Seeds exhibit dormancy and benefit from pre-treatment for improved germination rates.
Before sowing
Seeds exhibit some degree of dormancy and benefit from pre-treatment. Without pre-treatment, germination is slow (less than 10% one month after sowing), continuing for 3-4 months.
Sowing
What to expect
Tips
Seeds are light-dependent for germination. Maintain high humidity initially, then gradually decrease moisture to harden off seedlings. Avoid waterlogging. Ideal substrate temperature: 18-24°C for germination, but optimal growth temperature 25-30°C. Seedlings reach 29 cm in 6 weeks under optimal conditions. Keep soil moist but not boggy to prevent rot/mould.
Sources: Plant World Seeds, Experimental Farm Network, PFAF Plant Database, scientific research publications on Ceiba pentandra seed germination, seed supplier guidelines
