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We have combined these two powerful search tools into a single Find a Plant service searching over 250,000 plant records.
Virtually all of the features of the old searches are still available and in addition we have added several new features to create a more comprehensive and user friendly search experience.
When using this search
Search by plant name, key attributes or both to find plant details and a list of
AGM plants have been through a rigorous trial and assessment programme. They are:
This plant will provide nectar and pollen for bees and the many other types of pollinating insects.
It is included in an evolving list of plants carefully researched and chosen by RHS experts. Divided into 3 groups these lists, linked below, are maintained by a team of RHS staff and are reviewed annually.
the RHS today and get 12 months for the price of 9
Other common names
false acacia common robinia
bastard acacia black locust fragrant white locust locust yellow locust
Robinia are vigorous suckering trees and shrubs, sometimes thorny, with pinnate leaves and racemes of pea-type flowers in early summer, sometimes followed by seed pods
R. pseudoacacia is a fast-growing, spreading tree to 25m tall with deeply furrowed rough bark and spines formed from stipules on twigs and suckers. The dark green leaves comprise 5-11 pairs of oval leaflets. Dense, drooping clusters of slightly scented white flowers, each 15-20mm long and with a yellow blotch at the base of the standard petal, are borne in late spring and summer and are followed in autumn by hairless, linear to oblong pods containing 4-10 seeds
Europe, N America
Toxicity All parts may cause severe discomfort if ingested
All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets
Aspect South-facing or West-facing or North-facing or East-facing
MoistureWell-drained, Moist but well-drained
SoilSand, Clay, Chalk, Loam
pHAcid, Alkaline, Neutral
Higher than 12 metres
wider than 8 metres
Time to ultimate height
Grow in moderately fertile soil; will tolerate poor dry soils. Larger trees develop brittle branches which may be damaged or dropped in strong winds. Suckering may be a problem
Propagate by seed or from root cuttings or from suckers
Suggested planting locations and garden types
Low Maintenance Drought Resistant
Pruning Pruning group 1 or Pruning group 7; pruning should be done in late summer or early autumn to prevent bleeding; sucker removal if necessary, in autumn
Pests Generally trouble free
Generally disease free but in more recent years there have been Frisia dieback problems
RHS members can get exclusive individual advice from the RHS Gardening Advice team.
The Royal Horticultural Society is the UK’s leading gardening charity. We aim to enrich everyone’s life through plants, and make the UK a greener and more beautiful place.