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Open 1 Jan-25 Feb: 10am-4pm, 26 Feb-25 Mar: 10am-5pm, 26 Mar-30 Sep: 10am-6pm, 1 Oct-4 Nov: 10am-5pm, 5 Nov-31 Dec: 10am-4pm. Last entry to Gardens: 60 minutes before site closes. Last entry to House: 30 minutes before House closes. Garden's Café: 10:00 - 30 minutes before closing. Last food orders 15:30. *Closed 25 and 26 December


Partner Garden
Free access for RHS members at selected times

St Nicholas
Vale of Glamorgan

M4, Jct 33 on A48 then follow signs.

55 acre (22ha)

02920 593 328

Visit website


Non-member adult £11

RHS members

Free access applies throughout open period (excluding special events).


  • Baby changing facilities
  • Café
  • Children's activities
  • Children's playground
  • Disabled access
  • Disabled facilities
  • Dogs welcome
  • Free carer entry
  • Gift shop
  • Group rates
  • Parking
  • Picnics allowed
  • Plants for sale
  • Restaurant
  • Toilets


  • Arboretum
  • Autumn colour
  • Champion trees
  • Colour themed borders
  • Glasshouse (open to public)
  • Herbaceous border
  • Japanese garden
  • Mediterranean/Italian garden
  • Pond or lake
  • Rock garden
  • Sculpture
  • Sub-tropical garden
  • Wildflower meadow
  • Wildlife planting and features

About the garden

Owned by
National Trust

Designed By
Thomas Mawson

A peaceful oasis on the outskirts of Cardiff, Dyffryn Gardens boasts 55 acres of exceptional Edwardian garden design with the unique Victorian Dyffryn House situated at the heart of the property. Considered by Cadw to be the best Edwardian gardens in Wales, the National Trust site features a stunning collection of intimate garden rooms, formal lawns and glasshouse showcasing an impressive cactus and orchid collection.

The kitchen gardens provide a bountiful harvest of fruit and vegetables that supply the on-site cafés. The striking great lawn, which can be seen in all its glory from the upstairs of Dyffryn House, flows from the property’s croquet lawn, which is kept to international competition standards. Offering an exotic feel to the gardens with all-year-round colour is the 22-acre arboretum on the east side of the property, holding one of the most significant collections of trees in the National Trust. This substantial tree garden is undergoing development as part of a five-year revival project to protect unique and rare specimen trees within the arboretum, including a number of Champion Trees.

Open from 10am every day except for Christmas and Boxing Day, there is ample opportunity to explore the gardens with their experimental themes, taste the produce in the cafés and shop at reception. A regular programme of events also means that there are plenty of things to see and do.

Looking beyond the botanical displays, you’ll see evidence of the garden design of eminent landscape architect, Thomas Mawson, who was commissioned in 1903 by John Cory, a coal entrepreneur and important figure in South Wales during the Victorian era. The originality of the garden’s arrangement was due to Mawson’s collaboration with Reginald Cory, John’s son, who was a passionate plantsman and funded several plant hunting trips across the world.

Plants of special interest

  • Agapanthus
  • Alliums
  • Alpines
  • Asters
  • Begonias
  • Bluebells
  • Cacti & succulents
  • Camellias
  • Chrysanthemums
  • Clematis
  • Conifers
  • Cornus (for winter stems or spring bracts)
  • Cut flowers
  • Cyclamen
  • Daffodils
  • Dahlias
  • Delphiniums
  • Ferns
  • Fruit blossom
  • Fruit bushes/trees
  • Fuchsias
  • Grasses
  • Hellebores
  • Hemerocallis
  • Herbs
  • Irises
  • Lavender
  • Lilies
  • Magnolias
  • Maple
  • Meconopsis
  • Orchids
  • Primulas
  • Rhododendrons/azaleas
  • Roses
  • Shade-loving plants
  • Snowdrops
  • Spring bulbs
  • Sweet peas
  • Vegetables
  • Waterlilies
  • Wildflowers
  • Wisteria

Get involved

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.