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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
wapato duck potato
American arrowhead various-leaved arrowhead
Sagittaria can be marginal or submerged aquatic, tuberous perennials or annuals, with linear, lance-shaped or arrow-shaped leaves and panicles of 3-petalled white flowers in summer
S. latifolia is a marginal aquatic perennial with usually arrow-shaped leaves, to 30cm in length, and racemes of whorled white flowers, 4cm across, in 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 Exposed or Sheltered
SoilSand, Clay, Loam
pHNeutral, Acid, Alkaline
Time to ultimate height
This plant is listed on Schedule 9 of the UK Wildlife & Countryside Act as an invasive non-native species. While this does not prevent it from being sold in the UK, or from being grown in gardens, the RHS encourages those that do grow it to take great care with managing it and with disposing of unwanted material. The RHS also encourages gardeners to find alternative plants to grow to those listed on Schedule 9. For suggested alternative plants see the Plantlife/RHS guide: Gardening without harmful invasive plants
Propagate by seed or by runners in summer. Alternatively, plant overwintered tubers in spring
Suggested planting locations and garden types
Pruning Cut back in late summer and remove dead flowerheads to prevent self-seeding
Pests Leaves may be damaged by water lily aphids
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.