TreeHelp Annual Care Kit for Oak A complete care package to maintain healthy and beautiful oak. Promotes root development and the long-term vitality of all types of oak. A mix of macro- and micronutrients, beneficial fungi and bacteria that promote root development. Includes Mycorrhizal Treatment, One Bag Premium Fertilizer, and Biostimulant. Treats one large tree or 2-3 smaller or newly planted trees. Includes complete instructions.