Espoma Organic Holly-Tone 4-3-4 is a premier, slow-release organic fertilizer specially formulated for acid-loving plants like azaleas, rhododendrons, blueberries, and evergreens. It features a 4-3-4 NPK ratio, enhanced with 5% sulfur and Bio-tone beneficial microbes, which promote deep green foliage and larger blooms without causing plant burn.
