Local Name : Borpaat (Assamese)
Scientific Name: Ailanthus grandis Prain
English Name : Trees of heaven
| Bark | Lenticels |
| Commercial Value | Timber, Fodder and Plywood |
| Final Financial Return | ₹30,000-₹40,000 |
| Final Harvesting Period | 20 Years-40 Years |
| Flower Color | Greenish White |
| Flowering Time | September |
| Fruit Type | Winged |
| Fruiting Time | January, March, February, December and April |
| Growth Rate | Moderate Fast |
| Leaf Shape | Lanceolate and Ovate |
| Nursery technique | Seed viability is one month. No of seeds per kg is 1000-1500 approx. (Dry wt.). Before the seeds are sown the wings are removed. The seeds are small in size, so they are sown on top of mother bed. A hay shed is prepared to cover the mother bed to protect the seeds from direct sunlight, rain and wind so that seeds do not get dibbled in earth. The medium for mother bed is prepared consisting of sand, river silt, vermicompost/cowdung in 1:1:1 proportion.
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| Plant parts used | Bark, Leaves, Wood and Resin |
| Planting mechanism | One to two years old seedlings are ready for planting during rainy season. Spacing 3m x 3m. May be planted as mixed or pure crop. |
| Seed Collection Time | April, May and March |
| Site Suitability | Upper Assam |
| Tree Character | Evergreen |