Worm castings and worm tea

Worm castings are the reason most of us start worm farming. They’re one of the best natural plant foods there is, and they never burn plants. I’ve grown hundreds of tomato plants and other food plants in poor sandy soil with them.

On this page you’ll find everything about the harvest and what comes after: when castings are ready, how to separate worms and castings in single bins and stacking trays, how to dry and store castings, and how to brew worm tea that feeds your plants and helps them resist disease.

One tip from experience: the liquid that drips out of the bottom of a worm bin (leachate) is not the same as brewed worm tea. My articles explain the difference and when each is useful.

Thinking of selling your castings one day? See “Start a profitable worm business from home“.