Feather Meal is a semi-slow release organic nitrogen fertilizer (13% nitrogen) made from cooked, sterilized, and ground poultry feathers. It delivers a steady source of nitrogen over an extended period, supporting continuous green growth without the spikes of quick-release fertilizers. At a glance Type: Organic nitrogen fertilizer and soil amendment Nitrogen content: 13% nitrogen Release start: Begins releasing nitrogen within 4 to 7 days of application Release pattern: About 75% over the first 3 months, with the remainder for up to another 3 months Source: Poultry processing by-product, cooked and sterilized Certification: Organic Best for Corn, leafy greens, and fast-growing vegetables Crops needing a consistent, long nitrogen supply Garden beds wanting steady green growth Organic and eco-friendly gardening programs How to use Evenly mix Feather Meal into the topsoil before planting to maximize root access to nitrogen as it becomes available. Apply during early vegetative stages to support steady leaf and stem development, then monitor plant response to adjust future applications. Release rate is influenced by soil pH, moisture, temperature, and the presence of soil microbes that break down the meal. About The Soil Makers The Soil Makers are grounded in soil science, offering transparent nutrient content and release behavior so you can plan your gardening calendar with confidence.