Espoma Holly-Tone is the original organic fertilizer specially formulated for acid-loving plants including azaleas, rhododendrons, camellias, evergreens, hydrangeas, blueberries, and holly. This 27-pound bag contains a rich blend of natural and organic ingredients enhanced with Bio-tone beneficial microbes and elemental sulfur to help acidify soil and create optimal growing conditions.

The 4-3-4 NPK formula provides long-lasting slow-release feeding that promotes deep green color and bigger blooms without burning plants. Made in a solar-powered manufacturing facility, this fertilizer contains no sludges or fillers and is safe for people, pets, and the planet. Suitable for use on trees, shrubs, beds, and container plants year-round, with recommended feeding in spring and late fall.