Help us achieve our goals:
make a donation »
Join the RHS today and
support our charity
Free personalised gardening advice
RHS members get reduced ticket prices
RHS members get free access to RHS Gardens
Reduced prices on RHS Garden courses and workshops
020 3176 5800
Mon – Fri | 9am – 5pm
Make a donation
Join the RHS today and support our charity
I have forgotten my password
Keep me signed in
Register for free to receive our newsletters, add comments to blogs/articles and to save content.
See what events are on near you and browse your bookmarked pages.
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
yellow lady's slipper orchid
Cypripedium calceolus var. calceolus
Cypripedium are terrestrial orchids with erect, leafy stems growing from slender rhizomes and bearing solitary or racemose flowers comprising three spreading tepals and an inflated pouch-like lip
C. calceolus is a terrestrial orchid with soft, folded bright green leaves 5-20cm long. In summer bears purple-brown flowers 9cm long with twisted petals and large, deep yellow lips, singly or in pairs on upright stems to 40cm high
Europe to Japan
All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets
Aspect North-facing or West-facing or East-facing
MoistureMoist but well-drained
pHAcid, Alkaline, Neutral
Time to ultimate height
Grow in moist, fertile, leafy, humus-rich slightly alkaline soil in a sheltered site with dappled or partial shade. Provide an annual winter mulch of leaf mould. Suits a shady rock garden or woodland garden
Propagate by division in early or mid-spring and replant immediately. Some of the soil from the root ball, which contains beneficial fungi, should be planted with each division
Suggested planting locations and garden types
Cottage & Informal Garden Wildlife Gardens
Pruning No pruning required
Pests Susceptible to slugs
May be affected by grey moulds
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