Description
Vachellia nilotica (commonly known as gum arabic tree,[5] babul,[6] thorn mimosa, Egyptian acacia or thorny acacia[7]) is a flowering plant tree in the family Fabaceae. It is native to Africa, the Middle East and the Indian subcontinent. It is also a Weed of National Significance in Australia (an invasive species of significant concern in Australia,) as well as a Federal Noxious Weed in the United States.[8]
Germination Guide
🌍 Africa, Middle East, Indian Subcontinent
Moderate
Vachellia nilotica (formerly Acacia nilotica), known as the Gum Arabic Tree, is a pioneer species native to Africa, the Middle East, and the Indian subcontinent. This hardy legume features bipinnate leaves and bright golden-yellow globular flowers. The hard seed coat requires pre-treatment to achieve high germination rates.
Germination
Germination time
Expect germination in
7 – 21 days
Temperature
Min 10°C
Ideal 21°C
Max 30°C
Substrate moisture
💧 Medium
Seed Pre-treatment
-
💧
Soaking — 24 hours
Seeds soaked in warm water after hot water treatment for 12-24 hours
-
🔨
Hot water scarification
Nearly boiling water followed by 12-24 hours soaking in warm water, or mechanical scarification
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❄️
Cold stratification — 42 days at 4°C
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📋
Additional notes
Seeds require pre-treatment due to hard seed coat. Acid treatment (120 min) or hot water effective. Fresh seeds may germinate without treatment.
Substrate & Container
Recommended substrate
Well-draining potting mix, sand and compost mixture
Recommended container
Separate bags or pots with drainage holes
Growing Tips
Seeds are best sown when fresh and moist. If storing, seeds develop hard coats and require scarification. Seedlings develop rapidly with a strong taproot; use separate containers for each seed. Requires full sunlight and free-draining soil after germination. Tree is extremely drought resistant and tolerates heat well.
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