Rapeseed Cake, Maruta Brand imported by Joshua Roth, is manufactured in Japan by the suppliers to the Isei Shrine. Nearly impossible to overfeed, as it is long lasting - Replace every 50 days in summer, 100 days in winter. Each cake is approximately 1" diameter by 5/6" thick, and consists of Rapeseed Oil Cake and its powder. No bonemeal or any other animal ingredients. Apply cakes at the rate of 3-4: 5 inch container, 4-5: 6" container, 5-7: 7" container, 8-12: 15" container. Does not deteriorate even when it appears moldy. Nutrients: N:5.3%, P2O5:2.3%, K2O:1% This is a 1.1 pound bag, with approx. 44 pieces. We also carry fertilzer cups to cover these cakes to prevent birds from eating them.