Jobe s slow release evergreen fertilizer spikes are specially formulated to help most plants increase root mass support healthy foliage growth and to develop stronger and healthier plants overall. It provides reliable long-term benefits to your garden without relying on synthetic chemicals creating a healthy ecosystem for your plants family and the environment. The fast-acting formula ensures quick results for your plants. With a NPK formulation of 13-3-4 this fertilizer provides a balanced nutrient mix to support healthy plant growth. It also increases microorganism activity in the soil which promotes healthier living soil. This in turn enhances root growth improves nutrient absorption and helps plants resist diseases and insects. Application is simple and should be done twice a year in early spring or late fall or as needed during the growing season