Also known as Clammy-Bark Locust · Rose Acacia · Sticky Locust
Clammy Locust (Robinia viscosa) is a deciduous tree known for its sticky young growth and beautiful pink flowers, offering ornamental appeal to landscapes.
At-a-glance light, water, soil, and growing conditions from plant data
Full Sun
100% intensity
Prefers at least 6 hours of direct sunlight per day for best flowering and growth.
Moderate
50% intensity
Allow soil to dry slightly between waterings. Provide consistent moisture during dry spells.
Well-drained
50% intensity
Moderate
50% intensity
Prefers moderate temperatures; hardy in USDA zones 4-8. Protect from extreme heat.
Low
25% intensity
Fertilize once in early spring with a balanced, slow-release fertilizer. Not essential for established plants.
Safety information from plant toxicity data
| Attribute | Value |
|---|---|
| Toxic for humans | No 0/5 intensity |
| Toxic for pets | No 0/5 intensity |
| Edible | No |
Parts of the plant are toxic if ingested.
Key traits and growing stats from plant data
Watering, pruning, propagation, and repotting details from plant data
Water regularly, especially during dry periods, allowing the soil to dry slightly between waterings.
Established plants are moderately drought-tolerant but benefit from consistent moisture for optimal growth and flowering. Avoid waterlogged conditions, which can lead to root rot.
Prune in late winter or early spring before new growth emerges. Remove dead, damaged, or crossing branches to improve structure and air circulation.
Light pruning can also be done after flowering to shape the tree and remove spent flower clusters.
Propagate from seeds sown in autumn or spring, or by taking softwood cuttings in early summer. Seeds may require stratification. Root cuttings can also be successful. Grafting is another method for specific cultivars.
Repot young plants every 2-3 years, or when root-bound, in spring. Use a well-draining potting mix. Mature trees generally do not require repotting and are best left in their established locations.
Ensure adequate drainage in containers.
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Monthly activity intensity for bloom and fruit across both hemispheres.
Flowering & fruiting calendar
Flowering & fruiting calendar
Photos of Clammy Locust (Robinia viscosa)
Where Clammy Locust (Robinia viscosa) is found
Density
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Common names and botanical synonyms
Botanical classification
| Rank | Name |
|---|---|
| Kingdom | Plantae |
| Division | Tracheophyta |
| Class | Magnoliopsida |
| Order | Fabales |
| Family | Fabaceae |
| Genus | Robinia |
| Species | Robinia viscosa |
Similar in genus Robinia
Answers based on plant encyclopedia data
