Water
Water regularly, allowing the soil to dry out slightly between waterings. Avoid waterlogging, as this can lead to root rot. In hotter, drier periods, increase watering frequency.
Reduce watering in cooler months to prevent over-saturation.
Siamese Rough BushStreblus asper
Also known as Sandpaper Tree · Siamese Rough-Bush · Toothbrush Tree
- Category: Ornamental
- Type: Tree, Shrub
- Sunlight: Full Sun to Partial Shade
- Water: Moderate
- Temperature: Warm to Moderate
Siamese rough bush (Streblus asper) is a hardy, drought-tolerant shrub or small tree native to Southeast Asia, often used for hedges and screens.
Siamese Rough Bush Care Summary
At-a-glance light, water, soil, and growing conditions from plant data
Light
Full Sun to Partial Shade
75% intensity
Prefers bright, direct sunlight but can tolerate some shade, especially in very hot climates.
Watering
Moderate
50% intensity
Allow soil to dry slightly between waterings. Avoid waterlogged conditions.
Soil
Well-drained
50% intensity
Temperature
Warm to Moderate
50% intensity
Thrives in temperatures between 18-29°C. Protect from frost; bring indoors if temperatures drop below 10°C.
Fertilizing
Moderate
50% intensity
Feed with balanced liquid fertilizer during growing season, diluted. Reduce in winter.
Siamese Rough Bush Toxicity
Safety information from plant toxicity data
| Attribute | Value |
|---|---|
| Toxic for humans | No 0/5 intensity |
| Toxic for pets | No 0/5 intensity |
Siamese Rough Bush Quick Facts
Key traits and growing stats from plant data
- Plant Type
- Tree, Shrub
- Plant Category
- Ornamental
- Plant Place Type
- Garden, Pot
- Lifespan
- Perennial
- Plant Height
- 6-15 m
- Spread
- 3-7 m
- Growth Rate
- Moderate
- Dormancy
- None
- Leaf Color
- Green
- Leaf Type
- Simple
- Flower Size
- Small
- Optimal Sunlight Lux
- 60000
Care guide for Siamese Rough Bush
Watering, pruning, propagation, and repotting details from plant data
Pruning
Prune to maintain shape, remove dead or crossing branches, and encourage bushier growth. Heavy pruning can be done in late winter or early spring before new growth begins.
Light trimming can be performed throughout the growing season to keep the plant tidy.
Propagation
Propagate from semi-hardwood cuttings taken in summer. Dip the cut end in rooting hormone and plant in a well-draining potting mix.
Keep the cuttings moist and in a warm, humid environment until roots develop, usually within 4-8 weeks.
Repotting
Repot young plants annually in spring to provide fresh soil and more space for root growth. Mature plants can be repotted every 2-3 years or when root-bound.
Use a well-draining potting mix and ensure the new pot has adequate drainage holes.
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Flowering & Fruiting Cycles
Monthly activity intensity for bloom and fruit across both hemispheres.
Northern hemisphere
Flowering & fruiting calendar
Peak bloom · MayPeak fruit · Jun
FloweringFruiting
Southern hemisphere
Flowering & fruiting calendar
Peak bloom · AugPeak fruit · Aug
FloweringFruiting
Image Gallery
Photos of Siamese Rough Bush (Streblus asper)
Siamese Rough Bush Names & Synonyms
Common names and botanical synonyms
Common Names
- Sandpaper Tree
- Siamese Rough Bush
- Siamese Rough-Bush
- Toothbrush Tree
Synonyms
- Achymus pallens Sol. ex Blume
- Achymus patens Sol. ex Hook.f.
- Albrandia gaudichaudii D.Dietr.
- Albrandia orientalis D.Dietr.
- Albrandia timorensis D.Dietr.
- Calius lactescens Blanco
- Cudrania crenata C.H.Wright
- Diplothorax tonkinensis Gagnep.
- Epicarpurus asper (Lour.) Steud.
- Epicarpurus gaudichaudii Steud.
- Epicarpurus orientalis Blume
- Streblus lactescens Blume
- Trophis aspera Retz.
- Trophis cochinchinensis Poir.
- Vanieria crenata (C.H.Wright) Chun
Siamese Rough Bush Taxonomy
Botanical classification
| Rank | Name |
|---|---|
| kingdom | Plantae |
| division | Tracheophyta |
| class | Magnoliopsida |
| order | Rosales |
| family | Moraceae |
| genus | Streblus |
| species | Streblus asper |
Siamese Rough Bush FAQs
Answers based on plant encyclopedia data
What are the light requirements for Streblus asper?
Streblus asper thrives in full sun to partial shade. It is quite adaptable to different light conditions.
How often should Siamese rough bush be watered?
Once established, Siamese rough bush is very drought-tolerant and requires infrequent watering. Overwatering should be avoided.
Can Streblus asper be pruned?
Yes, Streblus asper responds very well to pruning and is often shaped into hedges or other formal garden structures.
What type of soil is best for Siamese rough bush?
This plant is adaptable to a wide range of soil types, including sandy, loamy, and clay soils. It prefers well-drained soil.
Is Streblus asper suitable for container gardening?
While it can be grown in containers, Streblus asper is a woody shrub that typically grows larger and is better suited for in-ground planting where it can achieve its full potential.