This package of fertilizer will treat 30-48 full size plants for three months (80-90 days) per treatment in a 1 or 2 gallon container (hardy lilies need larger containers that annuals) or twice that number of young plants. This is the very first tested and endorsed product by PondMegaStore.This product is worth its weight in gold, as it utilizes a binary technology to help plants take up available nutrients. It reduces the amount of fertilizer needed by newly potted plants to get off to a rapid start. This is 100% fertilizer! We recommend that you use 1/2 the recommended dosage for very young plants or plants in water over 75 degrees. Treat every 80-90 days, so 2 treatments per plant should be enough to get you through the spring and summer months. Hybridizer, Ken Landon, is the Director of the International Waterlily Collection in San Angelo, Texas. He developed this product and uses it on the 50 species and thousands of waterlilies in the collection. He has used this product for decades with spectacular results! This is the first and only product we have endorsed.