This is a dead hedge, an ironic name considering the habitat it provides for wildlife. Dead hedges are built from woody prunings, tree branches and foliage, creating shelter and food for insects, small animals and birds. They play an important role in habitat conservation and restoration. The material for a dead hedge is usually produced on site through forestry, pruning or clearing work, and the hedge will eventually compost down back to the earth. The ultimate in sustainability! I helped to build this one a few years ago during a stint as a conservation volunteer at Kew Gardens. First we hammered two rows of posts into the ground, angling in one direction. This made them less likely to bow out and fall under the stress of the ‘filling’ than if they were planted straight up. Next we began to weave the longer, springier prunings between the posts to make two parallel walls that were periodically packed with the ‘filling’ of remaining woody material. We kept building these walls and stuffing them until we were left with a lovely, thick hedge. I wasn’t intelligent enough to take a photograph, but fellow Londoners can see a nice example of deadhedgery (not a word, but seems appropriate!) in the nature reserve Leg O’ Mutton Pond, which lies between Hammersmith and Barnes on the south side of the Thames.