this fall after the leaves drop you can use dormant oil mix according to directions, wear old long clothes, mask, hat, goggles and clothes. Spray again in the early spring according to directions on the container. Do not spray on windy days......Spray all the way up to the flower bud.......once the bud opens stop spraying and only spray the trunk....keep children & pets away from this area until it is dry. Good luck with your tree..We need the bees for polunation so also plant some flowers for the bees.