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.
the RHS today and get 12 months for the price of 9
Other common names
hemp agrimony ague weed
andurion bastard agrimony common hemp agrimony Dutch agrimony hemlock parsley hemp weed holy rope Indian ague root water agrimony water hemp
Eupatorium can be annuals, herbaceous perennials, subshrubs or evergreen shrubs, with small tubular flowers borne in terminal panicles or corymbs
E. cannabinum is a vigorous upright perennial with reddish stems, leaves palmately-divided into narrow leaflets, and dense terminal domed clusters of tiny light pink or purple flowers in late summer and early autumn
All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets
Aspect West-facing or South-facing or North-facing or East-facing
Exposure Exposed or Sheltered
MoistureMoist but well-drained, Poorly-drained
pHAcid, Alkaline, Neutral
Time to ultimate height
Grow in any moist soil in full sun or partial shade. Can spread quickly, but is very attractive to butterflies and other insects
Propagate by seed sown in containers in cold frame. Divide in spring
Suggested planting locations and garden types
Flower borders and beds
Wildflower meadow Cottage & Informal Garden Wildlife Gardens
Pruning Cut back at end of the season
Pests Slugs and aphids may be a problem
Generally trouble 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.