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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
Rock's tree peony
Paeonia may be herbaceous perennials or deciduous sub-shrubs with large, divided leaves and showy large bowl-shaped flowers, usually in early summer
Shrubby peonies are sparsely branched deciduous shrubs leaves divided into several finger-like lobes, and bowl-shaped flowers in late spring or early summer
P. rockii is a lax deciduous shrub to 2m tall and wide, with dark green, divided foliage and semi-double white flowers 25cm across in late spring and early summer, each petal with a bold deep maroon blotch at the base
Toxicity If ingested all parts can cause mild stomach upset
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
SoilLoam, Clay, Sand
pHAcid, Alkaline, Neutral
Time to ultimate height
Best grown in neutral, humus rich soils, but slightly acid or slightly alkaline soils are tolerated. Good drainage is essential. Ideally, plant in a sunny position. Can be grown in light shade, but the plants may become straggly. Fully hardy, but young foliage and flower can be damaged by late frost. Further tree peony cultivation advice
Propagate by seed, seeds are doubly dormant needing two winters to germinate. There is a good chance that the young plants will be true to type or similar. Propagate by grafting, from semi-ripe cutting or try layering
Suggested planting locations and garden types
Flower borders and beds
City & Courtyard Gardens Cottage & Informal Garden
Pruning pruning group 1
Pests The foliage can be damaged by various caterpillar pests. Roots can be eaten by swift moth caterpillars
Can be affected by a virus - peony ringspot virus, peony wilt, verticillium wilt and honey fungus
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.
Join the RHS today and get 12 months for the price of 9