Jacaranda mimosifolia, commonly known as Blue Jacaranda or Fern Tree, is a subtropical deciduous tree native to south-central South America. Renowned for its spectacular violet-blue trumpet-shaped flowers that bloom in spring and early summer, it is widely cultivated worldwide as an ornamental tree. Seeds germinate readily with simple preparation, requiring warm temperatures (20-25°C), consistent moisture, and light exposure. Germination typically occurs within 10 days to 3 months, though timing can be variable.
Before sowing
After soaking, seeds may be placed on soil surface or covered lightly. Clean seeds before soaking to prevent contamination
Sowing
What to expect
Tips
Provide 12-14 hours of daily light using grow lights if natural light is insufficient. Keep soil consistently moist but not waterlogged to prevent root rot. Use fresh seeds when possible as they lose viability quickly. Cover seed tray with plastic to maintain humidity until germination occurs. After germination, gradually acclimate seedlings to reduced humidity and indirect light to avoid damage. Maintain warm temperatures (minimum 15°C) throughout growing period. Avoid exposing young seedlings to direct intense sunlight. Transplant seedlings when large enough to handle to individual containers with well-draining soil mix.
Sources: World Agroforestry, Sheffield's Seed Company, University of Florida IFAS Extension, Research studies on Jacaranda mimosifolia germination
