Every bag of fertilizer carries three numbers on the label — something like 5-3-2 or 4-4-4. These are the N-P-K ratios, and understanding them is the first step to feeding your garden intelligently.
Nitrogen drives leafy, vegetative growth. Plants that are nitrogen-deficient turn pale yellow and grow slowly. High-nitrogen sources in our blends include:
Phosphorus supports root development, flower formation, and fruit set. Without adequate phosphorus, plants may produce few flowers or fail to set fruit.
Potassium regulates water movement within the plant, strengthens cell walls, and improves resistance to disease, drought, and cold.
We don’t chase numbers. Our Grow Blend (5-4-2) and Bloom Blend (2-7-7) are designed around what the biology needs — not just what the label shows. When you buy a yard of Daley’s Mix, you get 20 lbs of our complete fertilizer blend included, plus an extra 10 lbs of high-phosphorus bat guano. The ratios work because the biology works.
See every ingredient and why it’s there in our Ingredient Library.
Common Questions
NPK stands for Nitrogen (N), Phosphorus (P), and Potassium (K) — the three primary macronutrients plants need. The numbers on a fertilizer bag represent the percentage by weight of each nutrient. For example, a 5-4-2 fertilizer contains 5% nitrogen, 4% phosphorus, and 2% potassium.
Nitrogen drives leafy, vegetative growth. It is essential for chlorophyll production and gives plants their green color. Plants deficient in nitrogen turn pale yellow and grow slowly. Blood meal and feather meal are fast-acting organic nitrogen sources.
Phosphorus supports root development, flower formation, and fruit set. Without adequate phosphorus, plants may produce abundant leaves but few flowers or fruits. Bone meal and fish bone meal are the primary organic phosphorus sources used in Daley Organics blends.
Potassium regulates water movement within the plant, strengthens cell walls, and improves resistance to disease, drought, and cold stress. Kelp meal and greensand are excellent natural potassium sources.
Daley's Grow Blend is 5-4-2, with higher nitrogen for vegetative growth like leafy greens and early-season development. Bloom Blend is 2-7-7, with higher phosphorus and potassium for flowering, fruiting, and root development during the reproductive stage.
Want the full science behind every ingredient?
Our ingredient library covers all 26 amendments with full descriptions and product cross-references.