is plant tone a slow release fertilizer Espoma Organic Azalea-Tone (4Lbs) – Grow Organic

Espoma Organic Azalea-Tone 4-3-4 (4 lbs) is a premium plant food formulated specifically for acid-loving plants such as azaleas, rhododendrons, camellias, and hydrangeas. This organic fertilizer provides a slow-release source of balanced nutrition with a 4-3-4 NPK ratio and is enriched with Espoma’s exclusive Bio-tone® formula—a blend of beneficial microbes that support strong root growth and improve nutrient uptake. Designed for long-lasting feeding, it helps plants thrive in acidic soils while producing vibrant blooms and healthy, dark green foliage.

This natural shrub fertilizer is ideal for use during both planting and established growth phases. Apply it in early spring and again in late spring to maintain consistent nutrition throughout the flowering cycle. It’s easy to incorporate into garden beds or around individual shrubs and is safe for use around pets and people. Because it is made from natural and organic ingredients, it won’t burn plants or leach harmful chemicals into your soil.

Espoma Azalea-Tone is more than just azalea rhododendron food—it’s a complete solution for building healthier soil and supporting the long-term vitality of ornamental shrubs. Whether you’re tending to mature plants or establishing a new landscape, this fertilizer helps create the ideal growing conditions for acid-loving species. It’s trusted by organic gardeners for its reliability, safety, and ability to enhance flowering performance naturally.

Looking for more options? Shop our full Acid-Loving Fertilizer Collection or explore additional Espoma Products tailored to plant-specific nutrition.