How do I safely dispose of liquid Miracle-Gro that is about 5 years old?
The Gardener’s Answer
According to the Miracle-Gro representative that I spoke with, the liquid plant food is best used within three years after being purchased if stored properly. It is still viable for up to eight years. Technically, it can still be used if you want, but if you prefer to dispose of it, you should contact your solid waste company to find out when they collect household chemical waste products. You may ask your gardening friends if they would be interested in using it before you dispose of it.