Description
A magnificent, medium-sized, dry deciduous tree rarely more than 20 m tall, native to coastal forests and savannas in southern Asia and Australasia, with bipinnate foliage and showy racemes of golden yellow flowers. It is a popular ornamental in tropical countries, suitable for USDA Zones 10 and above, and makes a great shade tree. The finely grained wood is popular for furniture and other purposes. Seeds should be scarified or immersed in boiling water to break dormancy, then soaked at room temperature for a day.
Germination Guide
🌍 Indo-China to Northern Australia (Southeast Asia to northern Australia)
Moderate
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.
Germination
Germination time
Expect germination in
28 – 232 days
Temperature
Min 20°C
Ideal 22°C
Max 25°C
Substrate moisture
💧 Medium
Sowing depth
Lightly covered
Seed Pre-treatment
-
💧
Soaking — 24 hours
Soak in cold water overnight after boiling water treatment, or room temperature soak 24 hours
-
🔨
Mechanical scarification
Filing or scarifying one end of hard seed-coat; boiling water 2 minutes then cold water soak 1 night; dilute acid softening
-
📋
Additional notes
Untreated seeds require several months to germinate; scarification significantly increases germination rate from ~20% to 90%
Substrate & Container
Recommended substrate
well-drained sandy compost or seed-raising mix
Recommended container
pot or tray with well-draining soil
Growing 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.
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