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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
giant redwood big tree
wellingtonia giant sequoia mammoth tree Sierra redwood washingtonia
Sequoiadendron is a tall evergreen tree with soft, red-brown bark, flame-shaped when young, becoming more irregular with maturity. Short awl-shaped leaves are arranged spirally on the shoots, and ovoid cones become red-brown when mature
S. giganteum is a vigorous large evergreen tree forming a dense conical crown and thick, reddish-brown bark. Blue-green, awl-shaped leaves 6-12mm long arranged spirally round the shoots. Cone to 7cm, ovoid
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
SoilSand, Chalk, Loam
pHAcid, Alkaline, Neutral
Higher than 12 metres
wider than 8 metres
Time to ultimate height
Grow in moderately fertile, well-drained soil in full sun or light dappled shade
Propagate by seed in containers in a cold frame in spring. Root softwood cuttings in summer or semi-ripe cuttings in late summer
Suggested planting locations and garden types
Pruning No pruning required but will respond well to pruning back into older wood
Pests Generally pest free
Susceptible to honey fungus
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.