LANDON FERTILIZER-This 1 lb package will treat 3 - 8 full size plants for 3 months (80 - 90 days) per treatment in a 1 - 2 gallon container. (Hardy lilies need larger containers than annuals) or twice that number of young plants. This is the first product tested and endorsed 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 necessary to get newly potted plants of to a rapid start! This is 100% fertilizer. We recommend that you use 1/2 the recommended dosage on the package for young plants or plants in water over 75 degrees. Treat every 80 - 90 days, so two treatments per plant should be enough for spring and summer. This is the fertilizer that Ken Landon, hybridizer, developed and uses. Ken is the Director of the International Waterlily Collection in San Angelo, Texas. He has used this fertilizer for decades on the 2000 plant varieties and 50 species of waterlilies in the collection. Landon Fertilizer is the only product we have endorsed.