4 gardens, 2 free
Gardens to visit in Northern Ireland
Northern Ireland's mild climate suits exotic plants, especially around Strangford Lough, and Belfast has two fine free gardens with a Victorian palm house and an international rose garden.
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Free entry Belfast City Council
Botanic Gardens Belfast
Belfast, County Antrim
Free public park in Belfast, founded in 1828, with the Palm House begun in 1839, the Tropical Ravine of 1889, a rose garden, alpine garden and mature trees.
Free, including the Palm House and Tropical Ravine
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Paid entry National Trust
Mount Stewart
Newtownards, County Down
National Trust house and gardens near Newtownards, where a mild microclimate supports unusual plants and Edith, Lady Londonderry's themed gardens are filled with topiary, statuary and family stories.
Adults £17.60, children £8.80, family £44 (2026 Gift Aid prices; £16, £8 and £40 without); off-peak prices from £14.30 adult at quieter times
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Paid entry National Trust
Rowallane Garden
Saintfield, County Down
National Trust garden on the edge of Saintfield in County Down, begun in the 1860s, known for rhododendrons and azaleas, with a walled garden, rock garden, woodland and meadows.
Adults £13.20, children £6.60, family £33 (2026 Gift Aid prices; £12, £6 and £30 without); under 5s free
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Free entry Belfast City Council
Sir Thomas and Lady Dixon Park
Belfast, County Antrim
Free 128-acre park on Belfast's Upper Malone Road, home to the City of Belfast International Rose Garden and its July Rose Week, a Japanese-style garden, a walled garden and woodland trails.
Free
Prices and entry in Northern Ireland
A side by side summary. Prices and opening times change, so follow the link to each guide for details and sources.
| Garden | County | Entry | Price | Run by |
|---|---|---|---|---|
| Botanic Gardens Belfast | County Antrim | Free entry | Free, including the Palm House and Tropical Ravine | Belfast City Council |
| Mount Stewart | County Down | Paid entry | Adults £17.60, children £8.80, family £44 (2026 Gift Aid prices; £16, £8 and £40 without); off-peak prices from £14.30 adult at quieter times | National Trust |
| Rowallane Garden | County Down | Paid entry | Adults £13.20, children £6.60, family £33 (2026 Gift Aid prices; £12, £6 and £30 without); under 5s free | National Trust |
| Sir Thomas and Lady Dixon Park | County Antrim | Free entry | Free | Belfast City Council |