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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.
© RHS 2002
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Other common names
Hemerocallis flava Hemerocallis 'Lilioasphodelus'
Hemerocallis may be evergreen or herbaceous perennials, with narrow, strap-shaped leaves and funnel-shaped flowers on erect stems in late spring or early summer
H. lilioasphodelus is a spreading rhizomatous perennial,l to 80cm in height, with narrow leaves and fragrant, lily-shaped lemon yellow flowers 8-9cm in width
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
Exposure Exposed or Sheltered
MoistureMoist but well-drained, Poorly-drained
SoilClay, Loam, Chalk
pHAcid, Alkaline, Neutral
Time to ultimate height
Grow in fertile, moist but well-drained soil preferably in full sun. Flowering is likely to be poor in shadier situations. Tolerant of heavy clay and poorer soils. May need watering in spring to early summer in dry conditions to ensure flowering. See Hemerocallis cultivation for details
Propagate by division in early spring or early autumn. Propagate from seed (indoors or outdoors) in autumn or spring
Suggested planting locations and garden types
Flower borders and beds
City & Courtyard Gardens Coastal Cottage & Informal Garden Patio & Container Plants
Pruning Cut back flower stems after flowering has finished. Remove dead foliage as required
Pests May be attacked by aphids, slugs, snails, glasshouse red spider mite and thrips. This late-flowering species is less likely to suffer from Hemerocallis gall midge
Usually tough and reliable but may be affected by fungal leaf spot and rust diseases or bacterial leaf and stem rot
RHS members can get exclusive individual advice from the RHS Gardening Advice team.
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Join the RHS today and get 12 months for the price of 9