Join the RHS today and support our charitable work
Free personalised gardening advice
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
I have forgotten my password
Register for free to receive our newsletters, add comments to blogs/articles and to save content.
See what events are on near you and browse your bookmarked pages.
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:
We trial a wide range of plants to test their health, performance and weather endurance. The best performers could receive a prestigious RHS Award of Garden Merit
RHS Plant Trials provide the opportunity for multiple varieties of the same plant to be grown together, side-by-side, so they can be compared. They are assessed by an expert RHS forum panel who use the trial results to inform their decision to grant plants the RHS Award of Garden Merit (AGM) status - our seal of approval that the plant performs reliably in the garden.
We trial both commonly-grown existing cultivars and species of plants, and brand new introductions. This helps gardeners pick the best plants for them by giving the most up-to-date information. The plants are normally grown from seed and vegetative material submitted by nurseries, individuals and breeders.
Visitors to RHS Garden Wisley are welcome to view current trials on the Trials Field. Off-site trials are also held at gardens and nurseries across the UK - many of which have special public open days.
Each trial is assessed by a specialist forum, made up of experts in that particular group of plants. Their findings are then ratified by a Plant Committee.
See our list of current plant trials which includes many ornamental and edible crops.
You can download Plant Trials Reports and see details of current and past trials from the RHS Trials Database.
We also produce Grower guides which contain more information and interpretation to help gardeners make the most of the results of our trials.
Trials also provide an important spur for RHS research into cultivated plants and their names. Use this database to search a large index of garden plant names.
View the RHS Horticultural plant name database
Trials are an important source of material for the RHS Herbarium located at Wisley, which comprises many separate collections. The primary focus of the collections is to maintain and to acquire reference material of plants in cultivation.
the RHS today and get 12 months for the price of 9
Find out more about the Award of Garden Merit
See a list of current RHS Plant Trials
Search the trials database for details on crops and ornamentals.
Come and see the Trials Field at RHS Garden Wisley
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.