Found on peaty mineral soils or thin peats
that are waterlogged for at least part of the year, wet heath
usually looks very different from dry heath – ironically because it
often appears less ‘heathery’.
You will often see common heather on wet heaths, however, along
with cross-leaved heath, purple moor-grass, deer grass and, on
wetter sites, bog mosses (Sphagnum).
Wet heath is not as extensive as dry heath, with only 3,600
hectares recorded in lowland Wales.
Another form of heath, called humid heath, occurs in western
Wales thanks to the warm, moist climate. Although in fact usually
considered a type of dry heath, in Wales humid heath often
resembles wet heath and the two can be difficult to tell apart. The
principal difference is that there tends to be more western gorse
and purple moor-grass in humid heath, and more deer grass and bog
mosses in wet heath.
The majority of wet and humid heath is found in the Swansea area
on the Gower Commons, as shown by the diagram below. Wet and humid
heathlands are also found on the inland Pembrokeshire commons. Much
of the wet and humid heath on the Gower and in Pembrokeshire is
owned by the National Trust and subject to open access