Espoma® Organic Blood Meal is a pure source of 12% organic Nitrogen that promotes health and vigor and creates richer, greener foliage. It is a great remedy for sickly plants that are struggling. Espoma® Organic Blood Meal quickly adds nitrogen to the soil which is also desirable for areas in the garden where nitrogen has been depleted through repeated planting such as in the vegetable garden. Blood Meal is recommended for use in the spring and fall, but can be applied throughout the growing season if additional nitrogen is needed. It is suitable for use on all annuals, perennials, vegetables, trees and shrubs. Use as directed on the package as too much nitrogen can keep plants from flowering or may cause burning.