Fencing porcupines from small tree plantings, orchards and gardens can be done with some small alterations. Porcupines can climb fences, but an overhanging wire strip around the top of the fence at a 65 degree angle to the upright wire will discourage them. A combination fence of 18″ poultry wire topped with a smooth electric wire 1½″ above will deter porkies. A 4-6″ high electric fence painted with molasses has also been shown to be a barrier around orchards, plantations and gardens. Individual trees can be enclosed with 30″ wire baskets or bands of aluminum flashing.