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Partner Garden
Free access for RHS members at selected times

Portaferry Road
BT22 2AD

East of Belfast on A20.

100 acres (gardens and parkland)

028 4278 8387

Visit website

Opening Hours

10am–4pm, daily, (10am–5pm, 13 Mar–29 Oct), excluding 25–26 Dec.


Please see website for admission prices.

RHS members

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


  • Accessible facilities
  • Baby changing facilities
  • Children’s play area
  • Children's activities
  • Dogs welcome
  • Free carer entry
  • Gift shop
  • Group rates
  • Parking
  • Picnic area
  • Plant sales
  • Refreshments
  • Toilets


  • Mediterranean/Italian garden
  • Pond or lake
  • Sculpture
  • Woodland

About the garden

Owned by

The garden at Mount Stewart is unique and of rare quality, being one of the few late compartmentalised Arts and Crafts-like gardens. It is a deeply personal garden, the creation of Edith, Lady Londonderry in the early 20th century, building on a pre-existing historic 18th and 19th-century landscape.

A strong artistic theme is combined with an unrivalled plant collection, which is protected and augmented via the nursery and propagation operation situated in the old walled garden. The mild climate of Strangford Lough allows astonishing levels of planting experimentation. 

The formal areas exude a strong Mediterranean feel and resemble an Italian villa landscape; the wooded areas support a range of plants from all corners of the world, ensuring something beautiful blooms whatever the season. Considered to be one of the most outstanding gardens in the world, Mount Stewart is one of the most visited National Trust mansion house properties in Northern Ireland.

Please note: This garden is partially accessible.

Plants of special interest

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

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.