Nature in the garden is all very well but, I have lost two very expensive dwarf apple trees this autumn/winter to rodents (voles or mice) they were planted in half oak casks and the offending varmint has burrowed up through the barrels and eaten the trees from the roots up. I live in the country and I am used to protecting plants from rabbits, pigeons etc but this really has had me beaten, plastic or clay pots from now on.