Geograph - photograph every grid square

East Blean Wood NNR (including Childs Forstal) covers over 122 hectares of ancient semi-natural woodland situated on poorly drained London clay, with a small area of gravelly soil in the south.
The soil is mostly fairly acid, as shown by the carpets of bluebells and patches of heather, but more alkaline elsewhere, with characteristic species such as spurge laurel, sanicle and common spotted-orchid. The wood has been heavily managed in the past and was a prime source for sweet chestnut. When conditions are open, after the coppice is cut, much of the ground is colonised by common cow-wheat, which is the food plant of the caterpillar of the nationally rare heath fritillary butterfly.