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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
the RHS today and get 12 months for the price of 9
Other common names
flowering rush grassy rush
lily grass water gladiolus
Butomus are submerged rhizomatous perennials with narrowly strap-shaped leaves and 6-petalled pink flowers held in umbels well above water level
B. umbellatus is an herbaceous perennial to 1.2m, with upright, twisted grassy leaves and stiff stems bearing umbels of fragrant rosy-pink flowers 2cm in width in late summer
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 Sheltered or Exposed
SoilSand, Clay, Loam
pHNeutral, Acid, Alkaline
Time to ultimate height
Grow in fertile mud at pond margins or in water up to 25cm deep, in full sun
Propagate by seed sown as soon as ripe or by rhizome division in spring
Suggested planting locations and garden types
Cottage & Informal Garden Wildlife Gardens
Pruning Cut back after flowering
Pests Can get water lily aphid
Generally disease free
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