The Arbor Care 15-8-4 2.5 Gallon is a premium liquid fertilizer formulated to enhance the growth and vitality of trees, shrubs, evergreens, and ornamental plants. With a balanced 15-8-4 NPK ratio, it delivers essential macronutrients and micronutrients for optimal root development and foliage health. The inclusion of 40% slow-release nitrogen ensures steady nutrient availability for up to six months, supporting long-term growth without excessive flushing.