Unlike other compost, worm castings also contain worm mucus which helps prevent nutrients from washing away with the first watering and holds moisture better than plain soil.Nancarrow, Loren; Taylor, Janet Hogan (1998). The Worm Book: The Complete Guide to Gardening and Composting with Worms Ten Speed Press. p. 4. .
Unlike other compost worm castings also contain worm mucus which helps prevent nutrients from washing away with the first watering and holds moisture better than plain soilNancarrow Loren; Taylor Janet Hogan (1998) The Worm Book The Complete Guide to Gardening and Composting with Worms Ten Speed Press p 4 