- Liquid UnderGround
Humboldt Liquid Underground Worms are Mother Nature's most famous decomposer. The benefits that worms provide for our gardens are plentiful and essential. Worm castings in particular, provide all the sixteen necessary plant nutrients, as well as vital organic acids, and beneficial organisms. 1 tablespoon of worm castings can provide enough plant food for a 6' potted plant for more than 2 months. Worm castings and worm extracts are used by discerning professional and hobbyist gardeners around the world.