[2] Culm grassland is found in poorly drained lowland areas of acidic soil where there is high rainfall.

The vegetation includes abundant purple moor grass and sharp-flowered rush.

The Trust endeavours to protect, re-establish and link together isolated sites of culm grassland.

[5] In the reserve there is grazing by Devon ruby cattle from late summer to early autumn; there is swaling of areas in winter to remove dead grass and allow delicate plants to survive.

[5] In 2012, Dunsdon was named Devon's Coronation Meadow, part of a project led by the charity Plantlife to name a wildflower meadow in every county to celebrate 60 years since the Coronation of Elizabeth II.