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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.
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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.
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Other common names
castor oil plant 'Carmencita'
Ricinus is a fast-growing evergreen shrub, often grown as an annual, with large, palmately lobed leaves and dense spikes of small flowers, followed by prickly seed capsules
'Carmencita' is a large tender shrub grown as an annual in temperate climates, with large, deep bronze-red, palmately lobed leaves and showy red female flower spikes in summer
Toxicity All parts of the plant are highly toxic if ingested, particularly the seeds. Contact with the foliage may aggravate skin allergies. Wear gloves and other protective equipment when handling
All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets
Aspect West-facing or South-facing
Exposure Exposed or Sheltered
MoistureMoist but well-drained, Well-drained
SoilChalk, Loam, Sand
pHAcid, Alkaline, Neutral
Time to ultimate height
Grow in a loam-based compost in full light. Water freely in growth and apply a balanced liquid fertiliser monthly. Plant outdoors when all danger of frost has passed. Stake plants in exposed positions. Plants grown on poorer soils tend to produce flowers at the expense of foliage
Propagate by seed, sowing in late spring. Soak seed for 24 hours and sow singly in pots with bottom heat
Suggested planting locations and garden types
Flower borders and beds
City & Courtyard Gardens Coastal Cottage & Informal Garden Patio & Container Plants
Pruning Pruning group 9
Pests Glasshouse red spider mite may be a problem
Generally disease free
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.