Peltophorum pterocarpum is a fast-growing tropical deciduous tree native to Southeast Asia with bright golden-yellow flowers. Seeds possess hard impermeable coats requiring scarification to break dormancy and facilitate successful germination.
Before sowing
Scarification
mecanica Filing or scarifying one end of hard seed-coat; boiling water 2 minutes then cold water soak 1 night; dilute acid softening
Soak
24 h Soak in cold water overnight after boiling water treatment, or room temperature soak 24 hours
Untreated seeds require several months to germinate; scarification significantly increases germination rate from ~20% to 90%
Sowing
Substrate
well-drained sandy compost or seed-raising mix
Depth
levemente_coberta
Temperature
22°C
Moisture
media
Container
pot or tray with well-draining soil
What to expect
Step 1
Pre-treat the seed
Step 2
Sow at levemente_coberta · 22°C
Day 28–232
Seedlings emerge (~78%)
Tips
Seedlings best raised in nursery for about one year before field transplanting. Young trees flower in 4 years under good conditions. Seeds should be pre-treated and sown in well-drained, sandy compost kept moist and warm.
Sources: PROSEA, Plant World Seeds, World Agroforestry, Cambridge Seed Science Research, rare seeds suppliers
