Heswall Dales is a fine example of dry lowland heathland, with developing birch-oak woodland and areas of acidic marshy grassland along the natural valleys.
Trees and bracken are invading the heathland in places. The dry areas are dominated by Heather (Calluna vulgaris) with other heathland species such as Bilberry (Vaccinium myrtillus) and Western Gorse (Ulex gallii).
The damp areas have records for a number of unusual species but appear to have declined recently. The stream in the easternmost dale has abundant Pendulous Sedge (Carex pendula) under mature woodland.
Site Name: Heswall Dales S.S.S.I.
Site Code: S6
Date of Notification: 1979
Date of Revision: 1986
Grid Reference: SJ 261821