The easiest way to make worm compost tea is to mix a spadeful of worm castings into a watering can. More sophisticated methods for people wanting to cover a large area include using a container to mix worm castings and non-chlorinated water with molasses or animal feed. Aerating this mixture by stirring or with an aquarium air pump for a few days encourages the beneficial aerobic microbes to multiply. The idea is that if you infuse the worm castings with air and a food source, you increase its potency. This can then be strained, diluted further and applied with a sprayer.
Experimenting with different methods of making worm compost tea is part of the fun. (Nice to know that the castings-into-the-watering-can method works well for those of us gardening on a small scale.)
For tips on how to harvest your worm castings for use in making compost tea, click here. If you don’t have your own worm bin for a source of compost, click here for information on worm castings sold in bulk and available for local pickup.