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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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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
Narcissus triandrus 'Thalia'
Narcissus are bulbous herbaceous perennials with linear leaves and leafless stems bearing flowers, which may be solitary or in umbels, with 6 spreading perianth segments and a cup or trumpet-shaped corona
Triandrus daffodils are small, mostly less than 50cm tall, with up to 6 more or less nodding flowers per stem, each with a short cup and usually reflexed perianth segments
'Thalia' is a triandrus cultivar, flowering in mid-spring, and producing two, milk-white flowers per stem. These are about 5cm across, with small cups and narrow, slightly twisted outer petals
Toxicity Ingestion may cause severe discomfort
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 or East-facing
Exposure Exposed or Sheltered
MoistureWell-drained, Moist but well-drained
SoilSand, Clay, Chalk, Loam
pHAcid, Alkaline, Neutral
Time to ultimate height
Plant at one and a half to two times its own depth in autumn. Will tolerate most soils but prefers moderately fertile, well-drained soil that is constantly moist during the growing season. See daffodil cultivation for further advice
Propagate by removing offsets as the leaves fade in early summer
Suggested planting locations and garden types
Flower borders and beds Cut Flowers Underplanting of Roses and Shrubs Low Maintenance
City & Courtyard Gardens Cottage & Informal Garden Patio & Container Plants
Pruning Deadhead as flowers fade and allow the leaves to die down naturally
Pests May be attacked by slugs, large narcissus bulb fly, narcissus eelworm, and bulb scale mite
May be affected by narcissus basal rot, narcissus leaf scorch or daffodil viruses
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.