Local Name : Bonsum (Assamese, Bengali)
Scientific Name: Phoebe goalparensis Hutch.
English Name : Assam teak
| Bark | Furrowed |
| Commercial Value | Timber |
| Final Financial Return | ₹20,000-₹30,000 |
| Final Harvesting Period | 40 Years-60 Years |
| Flower Color | Creamy white |
| Flowering Time | June and May |
| Fruit Type | Berry |
| Fruiting Time | June and July |
| Growth Rate | Slow |
| Leaf Shape | Lanceolate, Ovate and Obovate |
| Nursery technique | Seeds are collected and soaked in water for 2-3 days and then sundried and then directly dibbled in shaded polypot or mother bed. The pointed part of the seeds should always be upward. The medium for polypot or mother bed is prepared consisting of sand, river silt, vermicompost/cowdung in 1:1:1 proportion. It should be planted in shaded bed.
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| Plant parts used | Wood |
| Planting mechanism | One year old seedlings are ready for planting during rainy season. Spacing 5m x 5m. May be planted as mixed or pure crop. |
| Seed Collection Time | April and March |
| Site Suitability | Lower Assam |
| Tree Character | Evergreen |
