Join the RHS today and support our charitable work
Keep track of your plants with reminders & care tips – all to help you grow successfully
For the latest on RHS Shows in 2021, read more
RHS members get reduced ticket prices
RHS members get free access to RHS Gardens
Free entry to RHS members at selected times »
Reduced prices on RHS Garden courses and workshops
020 3176 5800
Mon – Fri | 9am – 5pm
Help us achieve our goals
Join the RHS today and support our charity
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.
Other common names
common water starwort
Callitriche verna subsp. stagnalis
Callitriche can be terrestrial or aquatic perennials with slender stems bearing linear or spoon-shaped leaves and minute flowers in summer, useful oxygenating plants for ponds
C. stagnalis is an aquatic plant with spoon-shaped, bright green submerged leaves to 2cm long, and rosettes of broader floating leaves. Stems often root into wet mud to form a close mat; flowers insignificant
S Europe, N Afr.
Habit Mat forming
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 East-facing or West-facing
pHAcid, Alkaline, Neutral
Up to 10 cm
Time to ultimate height
Plant in ponds and streams at a depth of between 15cm-60cm (6in- 2ft)
Propagate by division or stem cuttings made in summer
Suggested planting locations and garden types
Pruning Limit spread as necessary
Pests Generally pest free
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.