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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.
Other common names
Rhododendron yakushimanum 'Alpina' Rhododendron metternichii var. yakushimanum
Rhododendron degronianum subsp. yakushimanum
Rhododendron can be evergreen or deciduous shrubs or trees, with simple leaves, sometimes with a dense colourful indumentum of hairs on the lower side, and funnel-shaped, bell-shaped or tubular flowers that may be solitary or in short racemes
R. yakushimanum is a compact, spreading evergreen shrub with narrow, convex leaves with a buff-felt beneath, and rounded trusses of bell-shaped, pure white flowers, opening from bright pink buds in mid spring. Shortlisted for Chelsea Plant of the Centenary in 2013 for the decade 1943-1952
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 East-facing or West-facing
MoistureMoist but well-drained
SoilClay, Loam, Sand
Time to ultimate height
Grow in moist but well-drained, leafy humus-rich, acid soil. Shallow planting is essential, deep planting will not be tolerated. See rhododendron cultivation
Propagate by seed, semi-hardwood cuttings in late summer, layering in autumn or grafting in late summer or late winter
Suggested planting locations and garden types
Flower borders and beds
Rock Garden City & Courtyard Gardens Cottage & Informal Garden Patio & Container Plants
Pruning Pruning group 8
Pests May be attacked by vine weevil, leafhoppers, lacebugs, scale insects, caterpillars and aphids
May be subject to powdery mildews, rhododendron petal blight, rhododendron bud blast and silver leaf
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.