Mount Usher is laid out across 22 acres along the banks of the River Vartry as it tumbles over a series of cascades on its way to the sea. It is a lovely example of a true Robinsonian style of garden with its free-flowing informality and natural design. At Mount Usher you’ll find over 5,000 species of plant, many of them rare and exotic, all grown organically, creating a tapestry of colour throughout the seasons. We’ve created The Perfect Guide to one of Ireland’s Greatest Gardens with our Mount Usher Tree Trail brochure.