Grid References O.S. Explorer map 177 Carmarthen & Kidwelly. Main entrance: SN373179, Site centre: SN374178
Tenure The site was given to the Trust in 1981 during the Dyfed Wildlife Appeal by Mr and Mrs Dunn.
Size 1 ha (2.5 acres).
Location and Access Notes
Public transport: No known public transport access.
4 km west of Carmarthen. From the A40 west of Carmarthen, take the B4312 to Johnstown
and then follow an unclassified road through Llanllwch for 3 km to Wern Ddu. Cars may be parked near Wern Ddu farm with the owner’s permission.
Mixed deciduous and wet woodland and stream.
Wern Ddu is a long strip of mature Oak woodland with a stream running the length of the site. Sessile Oak predominates with Wych Elm, and Downy Birch.
There is an understorey of Rowan, Holly, Guelder Rose (6-7), and Gorse, with Honeysuckle (6-9), Field and Dog Rose (6-7). There are large specimens of Beech in the drier areas. There is an abundant ground flora in spring with Bluebell (4-6), Early Purple Orchid (4-5), Foxglove (5-7), Primrose (2-5) and Wood Anemone (3-5).
A variety of bryophytes and ferns occur, including the rare moss Cephaloziella turneri. This woodland area provides a good habitat for birds, and several species of butterfly and moth, particularly during the late summer months.
Towards the south-west, the vegetation is more mixed with grasses, Rosebay Willowherb, Herb Robert and some Ash. As the plot narrows and becomes shadier, Garlic Mustard, Creeping Buttercup, Sow-thistle and various grasses are found.