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Partner Garden
Free access for RHS members at selected times

Forest Coal Pit

10 acres

01873 890219

Visit website

Opening Hours

Wed–Sat, 11am–5pm, 1 Jun–30 Sep. Pre-booking online is essential.


Please see website for admission prices.

RHS members

Free access (member 1 only for joint memberships) applies Wed and Thur only when open.


  • Assistance dogs only
  • DIY Refreshments
  • Free carer entry
  • Parking
  • Picnic area
  • Plant sales
  • Toilets


  • Cottage planting
  • Pond or lake
  • Wildflower meadow
  • Wildlife planting and features
  • Woodland

About the garden

Owned by
Sue and Ian Mabberley

Nant-y-Bedd Garden is a 10-acre organic garden nestling in an imposing mature forest, 1200ft up in the Black Mountains. Blending seamlessly into the special landscape of the Brecon Beacons National Park, the garden and woodland have slowly developed and grown over 40 years, taking cues from the environment and nature.

Embracing the challenges of a mostly damp, cool and shady setting to its advantage, the garden continually evolves with various projects being added over the years including the natural swimming pond, shepherd's hut and treehouse. Highlights of this magical garden include a productive potager, cottage and edible forest gardens with heritage and unusual cultivars, magnificent trees and a river walk. A strong emphasis on eco-friendly gardening sees vegetables and wildflowers mingle happily.

In 2019 the team were thrilled to welcome Alan Titchmarsh and his team from ITV's Love Your Garden as an 'inspirational garden' for the show. RHS Ambassador Alan Titchmarsh said of the garden: "If there is a more magical wild garden, I have yet to find it! Wonderful!". That year also saw the garden be named Wales' Favourite Garden in the English Garden/ NGS competition.

Plants of special interest

  • Alliums
  • Bluebells
  • Camellias
  • Conifers
  • Grasses
  • Maple
  • Primulas
  • Shade-loving plants
  • Vegetables
  • Wildflowers

Get involved

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.