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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
starflower 'Alberto Castillo'
Ipheion uniflorum 'Alberto Castillo'
Ipheion are small bulbous perennials with onion-scented, narrowly strap-shaped leaves and sweet-scented star-shaped flowers in late winter and spring
'Alberto Castillo' is a deciduous perennial to 20cm tall, with narrow light green leaves and white flowers 4cm wide, each petal with a faint green central stripe, flowering in late winter and spring
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
MoistureMoist but well-drained, Well-drained
pHAcid, Alkaline, Neutral
Time to ultimate height
Plant 8cm deep in autumn in moderately fertile, humus-rich, well-drained soil that does not dry out. Provide protective winter mulch in colder areas. In containers best grown in loam based compost such as John Innes No. 2 with added leafmould and grit. Under glass grow in bright filtered light
Propagate by seed, sown in pots in a cold frame when ripe (cultivars may not come true from seed) or by division in summer when dormant
Suggested planting locations and garden types
Flower borders and beds Underplanting of Roses and Shrubs
Coastal Cottage & Informal Garden City & Courtyard Gardens Patio & Container Plants
Pruning No pruning required
Pests Susceptible to damage by slugs and snails
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.