Miracle-Gro Slow Release All Purpose Plant Food enables you to grow plants twice as big, and because it is slow release, one application will feed plants up to 6 months, removing the need for regular feeding. Miracle-Gro Slow Release All Purpose Plant Food uses a patented technology used by professional growers. Contains all the required nutrients for strong healthy plants. Use Miracle-Gro Slow Release All Purpose Plant Food between February and June. Miracle-Gro Slow Release All Purpose Plant Food 1kg shaker jar feeds up to 13m