Am dan y warchodfa

Berry Wood is an example of mixed woodland, rare in this part of Gower, situated on poorly drained glacial drift over Millstone Grit. Oak is present with Birch, Ash, Hazel, Sallow, Rowan, and Aspen. The site is shown on the 1847 Llandewi Tithe map, as woodland on the western half and scrub to the east.

The oldest and largest trees, principally Oak, are to be found on the western side of the reserve today, and the remainder is made up of even-aged stands of multi-stemmed Oak, Birch, and Ash. This suggests that the eastern half of the reserve may have been clear felled during the Napoleonic Wars, and allowed to regenerate naturally, whereas the western half has remained untouched. The tithe map also shows a small triangular orchard within the wood on the western boundary, where apple trees still grow.

Towards the centre of the wood and in the northwest the ground is very poorly drained. The remainder of the field layer is covered in dense Bramble, with patches of Bracken. Hazel coppice, Hawthorn, Crab Apple, and Holly make up the shrub layer, with Honeysuckle and Ivy. Narrow Buckler-fern, Wood Millet, and where the ground is especially boggy Yellow Flag, Marsh Marigold and Opposite-leaved Golden Saxifrage may be found. There is an abundance of epiphytes on the Oak and Sallow, and bryophytes are well represented.

Wood Mouse and Pygmy Shrew also use the Blue Tit and Great Tit nest boxes, and others bird seen include Treecreeper, Nuthatch, Woodpeckers, Blackcap, Buzzard, Goldcrest, Jay, Willow Warbler, and Woodcock, with mixed finch flocks in winter including Brambling.