If you're already familiar with the magic of WonderSoil™ wafers, you'll love this new variety! This 5 pound bag consists of crushed up wafers that expand when watered and have the added convenience of letting you choose the exact amount you'd like to use. The original wafers are beloved by container gardeners everywhere because once rehydrated they expand up to 14x their size to perfectly fill a 4-inch pot. To the already beneficial soil wafer, Reground adds Mycorrhizae, biosol, lime, gympsum, and kelp starter nutrients. It serves as the ideal medium for growing cutting and re-acclimating transplants. 5-lb bag.