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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.
Join the RHS today and get 12 months for the price of 9
Other common names
holewort hollow leek
hollow root hollow wort
Corydalis bulbosa Fumaria cava
Corydalis can be annuals, biennials or tuberous or rhizomatous perennials, with ternately or pinnately lobed leaves and racemes of spurred, tubular flowers
C. cava is a tuberous perennial to 20cm in height, with ternately divided leaves and, in early spring, terminal racemes of white or purple flowers 2.5cm in length
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 or South-facing
Exposure Exposed or Sheltered
MoistureMoist but well-drained
SoilChalk, Clay, Loam, Sand
pHAcid, Alkaline, Neutral
Time to ultimate height
Grow in moderately fertile, humus-rich soil
Propagate by seed sown in containers in an open frame when ripe or by division in autumn
Suggested planting locations and garden types
Flower borders and beds Underplanting of Roses and Shrubs
Wildflower meadow Cottage & Informal Garden Rock Garden
Pruning No pruning required
Pests Generally pest free
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.