Join the RHS today and support our charitable work
Keep track of your plants with reminders & care tips – all to help you grow successfully
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
See how we run our plant trials and the RHS Award of Garden Merit (AGM)
by Graham Rice
This new marguerite has flowers that change colour harmoniously as they mature
Trial plants are submitted by nurseries, individuals and breeders.
Once an RHS Plant Trial has finished, we share the findings to help you choose the best plants for your garden.
See the most recent AGM lists of plants.
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.