Organic Rose & Flower Fertilizer 4-7-5 is a slow-release granular blend that feeds roses, flowering perennials, bulbs, and bloom-heavy vegetables for 4–6 weeks per application. Its phosphorus-forward 4-7-5 ratio puts available phosphate (P₂O₅) ahead of nitrogen to support flower bud initiation and root development, while moderate nitrogen helps avoid the leggy, foliage-heavy growth that high-nitrogen blends can produce.
The formula combines six sources — fish bone meal, bone meal, feather meal, alfalfa meal, kelp meal, and Azomite volcanic ash — releasing nutrients at different rates as soil microbes break them down. Azomite and kelp contribute a wide range of trace minerals, and bone meal adds calcium for stem strength and fruit nutrition. Burn risk is low compared with fast-release synthetic salts.
Work ¼ cup per square foot (or ½–1 cup per established rose bush) into the top 2–3 inches of soil at the drip line, then water deeply; reapply every 4–6 weeks during the growing season.
CDFA registered, blended from OMRI Listed® source materials, and independently lab tested for heavy metals, with results consistently well below required limits. Wear a dust mask when measuring or mixing large quantities.