Foxfarm, 4 lb, happy frog, Japanese maple fertilizer, blended for the unique needs of the Japanese maple, uses a lower nitrogen formula that supports a natural tendency to grow in cool weather environments which results in less leaf scorch in summer, even in sun, smooth transition to dazzling fall color, lower ph helps the roots take up the nutrients they need, & phosphorous & potassium deliver color illumination, contains premium organic ingredients like bat guano, cottonseed meal, feather meal, & humic acid, a naturally occurring organic material that is formed when organic matter decomposes.