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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
Leyland cypress 'Castlewellan'
× Cupressocyparis leylandii 'Castlewellan Gold' × Cupressocyparis leylandii 'Galway Gold'
× Cupressocyparis 'Castlewellan Gold'
× Cuprocyparis are large, very fast-growing evergreen trees of narrowly conical or columnar habit, with tiny scale-like leaves in dense sprays, and small spherical cones
'Castlewellan' is a vigorous columnar evergreen conifer to 25m or more, with flat sprays of golden-yellow foliage, sometimes tinged bronze
Toxicity Foliage may cause skin irritation
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 North-facing or West-facing or East-facing
Exposure Exposed or Sheltered
SoilChalk, Clay, Sand, Loam
pHAcid, Alkaline, Neutral
Higher than 12 metres
Time to ultimate height
Grow in well-drained soil in full sun or part shade. Suitable for hedging but requires regular trimming. Fast growing with the potential to become a nuisance
Propagate by semi-hardwood cuttings
Suggested planting locations and garden types
Hedging & Screens
Pruning No pruning required, but can be trimmed and shaped as required as long as cuts are confined to young green shoots. Old wood will not resprout. Trim hedges two or three times in the growing season
Pests May be affected by conifer aphids and scale insects
May be subject to a canker and honey fungus; see Conifers: brown patches
RHS members can get exclusive individual advice from the RHS Gardening Advice team.
We're a UK charity established to share the best in gardening. We want to enrich everyone's life through plants, and make the UK a greener and more beautiful place.