There are also beneficial nematodes, however, that prey on soil-dwelling larvae of insect pests. Worm castings owe their pest control capacity to chitinase, an enzyme that breaks down chitin ...

Adding worm castings to the soil increases moisture and nutrient retention, lessens compaction and adds beneficial microbes to your soil. Worm castings may look like soil, but they are actually ...

The worms emitted a pleasant earthy smell ... that contained nothing but the cheapest topsoil? I mixed the castings with the soil at a ratio of 1:4, which was within the range of recommendations ...