National Dahlia Collection

Gardening

• Grow your own
• Gardeners’ calendar
• Community gardening
• Sustainable gardening
• [ More in gardening ]

Science

• National Plant Collections at the RHS
• Plant registration
• RHS Herbarium
• RHS Horticultural Database
• [ More science ]

Press

• Media Centre

Plants

• RHS Plant Finder
• RHS Plant Selector
• RHS Publications
• Featured plants
• Plant trials & awards
• [ More in plants ]

Gardens

• Harlow Carr
• Hyde Hall
• Rosemoor
• Wisley
• Partner gardens
• Find a garden
• [ More gardens ]

Courses

• Qualifications
• Leisure learning
• Horticultural training
• Bursaries
• Careers
• Voluntary internships
• [ More courses ]

Shows & events

• RHS Chelsea Flower Show
• Hampton Court Palace Flower Show
• RHS Show Tatton Park
• RHS Show Cardiff
• Find an event
• [ More shows & events ]

Children

• For families
• For kids
• For schools
• Campaign for School Gardening
• [ More for children ]

About us

• Who we are
• What we do
• Support our work
• Jobs
• RHS Lindley Library
• Contact us
• Feedback & complaints
• [ More about us ]

Advice

• Advice search
• RHS Advisory Service
• Videos
• Garden design
• [ More advice ]

Membership

• Join the RHS
• Manage my membership
• [ More in membership ]

Shopping

• RHS Plants
• RHS Books & gifts
• RHS Prints
• [ More shopping ]