Wern Plemys

Reserve Information


Take the B4599 from the centre of Ystradgynlais towards Glanrhyd. Just before the river, turn left into Pantyffynon Road. Follow this road until it ends in a small car-park. Follow the path through two kissing gates and over a small bridge with blue railings. The path curves left and up the hill to the reserve entrance.

Nearest town: Ystradgynlais. Post code SA9 1ES.

SN 788 092


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Opening Times



6.1 hectares

Walking Information

The reserve is an open access reserve, you are allowed to visit the reserve on foot for your quiet enjoyment of the wildlife present. There are no trails as such around the site but a number of paths transect the reserve. The latter include several short stretches of boardwalk to cross wetter areas. The site can be very wet at all times of year.


The paths crossing the reserve are unsuitable for wheelchairs.

Geology Trail


Park next to Diamond Park and then walk through it to the reserve.


Please keep dogs under close control.

Grazing Animals

There may be ponies on site, please do not approach them or feed them. Additionally there may be electric fencing to keep them off parts of the site, please cross this with care.

Factsheets and Guides for Your Visit

Wern Plemys meadows and woodlands

The reserve consists of three wildflower meadows and a large area of woodland. The reserve lies on the site of a former coal-mine and is a wonderful example of how nature can reclaim an area.

Wern Plemys

Celandines carpet the woodland floor in Spring

What to look out for

Just below the main meadow are the crumbling walls of an old farmhouse. The farmer would have used the meadow for grazing his animals. The Trust continues this traditional form of management by grazing the meadows with Exmoor ponies.

Excellent views of the meadows, woodland and Ystradgynlais can be seen from the disused railway line running along the eastern boundary of the reserve. The line can be accessed from the upper right-hand corner of the main meadow.

The meadows feature a range of uncommon plants such as ragged robin, great burnet and devil’s bit scabious. The damper parts provide excellent habitat for frogs.

The woodland contains trees such as oak, ash, hawthorn and alder and provides home to a range of woodland birds. If you are lucky, you may see a green woodpecker with its green and yellow colouring, red head and undulating flight.

Look out for ragged robin in the damper areas

Species and habitats

Brownfield, Lowland Meadows, Lowland Mixed Deciduous Woodland, Ponds, Rush Pasture
Adder's-Tongue, Alder, Ash, Bird's-foot-trefoil, Blue Tit, Bracken, Bramble, Brimstone, Chiffchaff, Cock's foot, Common Blue, Common Cow-wheat, Common Darter, Common Frog, Common Lizard, Creeping Buttercup, Creeping Thistle, Crested Dog's tail, Dark Green Fritillary, Devil's-bit Scabious, Downy Birch, Elephant Hawk-moth, Enchanter's nightshade, Foxglove, Germander Speedwell, Goat Willow, Gorse, Grass Snake, Great Burnet, Great Spotted Woodpecker, Great Tit, Green Woodpecker, Green-veined White, Grey Squirrel, Guelder-rose, Hawthorn, Hazel, Heather, Hedge Woundwort, Herb Robert, Holly, Holly Blue, Lady-fern, Lesser Celandine, Magpie, Meadow Brown, Meadowsweet, Mouse-ear, Nuthatch, Orange-tip, Pedunculate / English Oak, Pignut, Purple Hairstreak, Ragged-Robin, Rhinoceros Beetle, Ribwort Plantain, Ringlet, Rowan, Silver-washed Fritillary, Soft-rush, Speckled Wood, Stinging Nettle, Tormentil, Weasel, Whirligig beetle, White Clover, Wood Avens, Wood-sorrel, Woodcock, Yellow Meadow Ant

Nature Reserve Map