Colvillea racemosa, commonly called Colville's Glory, is a fast-growing tropical tree native to Madagascar, prized for its spectacular clusters of bright orange-red flowers. Seeds have a hard coat and benefit from hot water scarification followed by warm water soaking to improve germination. This is an easy-to-grow species with germination occurring in 2-6 weeks under warm conditions, achieving typical rates of 50-70%.
Before sowing
All parts of the plant may be poisonous if ingested
Sowing
What to expect
Tips
Use floatation test to identify non-viable seeds before treatment. If seeds have not swollen after initial soaking, carefully nick the seed coat and soak an additional 12 hours. Maintain consistent moisture but avoid waterlogging. Keep soil temperature at 70-80°F (21-27°C) for optimal germination. Seedlings are ready to plant after 6-12 months when they reach 50-100 cm tall. Avoid pressing seeds into substrate; simply cover thinly. Newly emerged seedlings benefit from light exposure for healthy development.
Sources: tropical.theferns.info (PROTA database), VIRIAR, Plant World Seeds, Rare Palms Seeds, University of Hawaii CTAHR
