The Great Orme is not just a spectacular landscape; it is a site of genuine ecological importance, designated as a Site of Special Scientific Interest, a Country Park, and a Local Nature Reserve. The designation reflects the headland's remarkable combination of geology, flora and fauna, which together support species and communities found nowhere else in Wales and some found nowhere else on earth.
The limestone geology of the Great Orme creates alkaline, calcium-rich soils quite different from the acidic conditions that prevail on the igneous and metamorphic rocks of inland Snowdonia. This chemistry supports a specialised flora, including a range of orchid species, cowslips, spring squill, thyme, rock rose, and many other plants of calcareous grassland that would be out of place a few miles inland. The grassland communities are further shaped by the maritime exposure of the headland and by the grazing of the Kashmiri goats, which maintain the short sward that many of the specialist plants require.
The most extraordinary botanical resident of the Great Orme is the plant known as the Great Orme berry — Cotoneaster cambricus — a small shrub of the rose family that grows wild only on this headland. It is not found in the wild anywhere else in the world. The plant grows in the limestone cliff crevices and rocky outcrops of the Orme, its small white flowers giving way in autumn to bright red berries. It is one of the rarest wild plants in Britain, a botanical endemic of extraordinary specificity.
The Great Orme berry is legally protected under the Wildlife and Countryside Act, and it is an offence to pick or disturb the plants. It can be viewed growing naturally on some of the cliff-edge paths of the headland, and the nature reserve interpretation materials identify locations where it can be seen without risk of damage. For botanists, the Great Orme is one of the most interesting sites in Britain, and a spring visit timed to coincide with the orchid and wildflower season is particularly rewarding.
The sea cliffs of the Great Orme support significant nesting seabird populations. Guillemots and razorbills nest on the ledges of the northern and western cliffs, alongside fulmars and the occasional kittiwake. The more accessible cliff paths allow good views of the nesting activity in spring and early summer before the birds return to sea. Peregrine falcons are resident on the headland and can often be seen hunting over the grassland or perched on prominent rock outcrops.
The open grassland supports good populations of skylarks, meadow pipits and linnets, and during the spring migration period the headland acts as a concentration point for arriving migrants. Wheatears are among the first migrants to appear in March, often seen perching on rocks along the cliff paths. Autumn migration can bring a range of unusual visitors sheltering on the headland after a sea crossing.
The Kashmiri goats are the most visible large mammals, but the headland also supports a good population of rabbits, which are important prey for the resident peregrines and buzzards. Foxes are present but rarely seen in daylight. The short-eared owl is an occasional winter visitor to the grassland.
The Great Orme Country Park is freely accessible on foot at all times. The nature reserve is managed by Conwy County Borough Council, and there is a visitor centre near the summit with information about the wildlife, geology and history of the headland. The centre is staffed in the summer season and has displays covering the key natural history themes.
Dogs are welcome on the Great Orme but must be kept on leads at all times, both to protect the wildlife and because the goats can be present anywhere on the headland. The cliff edges are unfenced in most places; take care near the perimeter of the summit plateau and on the path sections above the Marine Drive. The paths are generally well-maintained but some sections are rocky and uneven; appropriate footwear is advisable.
The best time to visit for wildflowers is May and June, when the orchid season is at its peak and the full range of limestone grassland species is in flower. The best time for seabirds is April to June, when nesting activity is at its most visible. For the goats, any time of year is good, though the lambing season in spring makes encounters with young kids particularly memorable.