Description
A beautiful, medium-sized, dry deciduous ornamental tree native to southern Asia with bright yellow flowers in long, drooping racemes that appear before the leaves. A popular and easy ornamental for the tropics.
Germination Guide
🌍 Indian subcontinent and adjacent regions of Southeast Asia
Moderate
Cassia fistula, commonly known as the golden shower tree or Indian laburnum, is a tropical flowering tree native to the Indian subcontinent and Southeast Asia, celebrated for its stunning pendulous clusters of bright yellow flowers. Seeds require pre-treatment to overcome physical dormancy caused by their hard, water-impermeable seed coat. With proper scarification and soaking techniques, germination rates can exceed 80% and seedlings typically emerge within 10-21 days under optimal warm conditions.
Germination
Germination time
Expect germination in
10 – 21 days
Temperature
Min 20°C
Ideal 27°C
Max 35°C
Substrate moisture
💧💧 High
Seed Pre-treatment
-
💧
Soaking — 24 hours
After scarifying, soak seeds in cold water for 24 hours to soften the seed coat and allow moisture absorption. Hot water treatment can also be used as alternative pre-treatment.
-
🔨
Mechanical scarification
Rub seed edge with a rasp or file to create a weak area in the hard seed coat without creating holes. Mechanical scarification is effective and causes fewer side effects on seed tissues compared to chemical methods.
-
📋
Additional notes
Mechanical scarification followed by 24-hour cold water soaking is the recommended standard treatment. Alternative: acid scarification for 2 minutes followed by hot water soaking at 100°C for 6 minutes can achieve up to 96% germination.
Substrate & Container
Recommended substrate
well-draining sandy loam, peat, perlite, sand or coconut coir mixture
Recommended container
seed tray, shallow pot or individual gallon pot with drainage holes
Growing Tips
Ensure seeds are mature and dark brown before collection. Extract seeds with gloves as they can be toxic. Use full light and high humidity during germination but avoid waterlogging. Keep soil temperature between 25-30°C for best results. Seeds planted in summer germinate more readily due to longer daylight hours. If soaking, discard any seeds that do not swell after treatment. Germination can sometimes be slow and irregular, so maintain patience. Multiple flushes of germination may occur over extended periods.
Only logged in customers who have purchased this product may leave a review.
Reviews
There are no reviews yet.