Package contains 18 tomato fertilizer spikes and are produced to avoid wasteful runoff, mess, hazards and smells Formulated with a 6-18-6 NPK to ensure a continuous supply of nutrients below the surface, where the plants active roots are growing Application is simple and should be done at the time of planting or early in the growing season Jobe’s fertilizer spikes are pre-measured to provide the right amount of nutrients for tomatoes without risk of over fertilizing Jobe’s fertilizer spikes come in a variety of formulas and pack sizes to help provide lush foliage and vibrant color to your lawn and garden