The protective device is designed to be installed around the base of the trunk of the tree or bush. It is designed to have a variable height and is formed as a sheath, composed of a sheet of steel mesh, which forms the structural element of the device. The mesh is wrapped around with a material composed of mature compost and cellulose fibres. The device is thus presented in the form of a sheet of compacted compost, of around 1 centimetre in thickness. The height of the sheath and the nature of the compost are both variable and are selected according to the requirements of the individual plant or shrub to be fed and protected.
