Remke Professional Fertilizer Tablets - 200-12 gram Starter Tablets 12-17-17 were developed to supply the vital nutrtients needed during the plants first season. These tablets break down over a one year period through the action of soil bacteria which convert the tablets nutrients to forms that can be available and absorbed by the plant. These are great for establishing seedings to promote root growth and to supply vital nutrients. For each 12-18" of plant height, spread, or each 1/2" of tree trunk diameter at the base use 12-24 grams (1-2 tablet) for slow growers or 3-4 Tablets for fast growing plants. These also work great for container patio,citrus, new landscape plantings, Bare-root and balled and burlapped as well as established plantings. Use professional tablets and get professional results. Happy Gardening and Thanks for the visit. -