4-6-4, HollyTone, For All Acid Loving Plants, Time Tested, For Planting & Feeding. Holly-Tone, the original acid loving plant food, is a proprietary blend of the finest natural organics fortified with inorganics. It uniquely provides the proper nutrients and soil environment necessary for this group of plants. Holly Tone’s natural organics breakdown gradually providing a safe, long lasting food reservoir activated throughout the growing season to ensure superior development and blooms. Holly Tone uses the acidic decomposition from its natural ingredients to gently buffer the soil maintaining the correct acidic level for optimum growth and color. The number one choice and recommendation of professional nurserymen for decades, use Holly Tone with the confidence that you have chosen the very best for all your azaleas, rhodos, hollies, and evergreens. Due to changes in shipping regulations, we cannot ship this item to California.