"What's so great about worm castings?" I was recently asked. You may be wondering the same thing. I LOVE answering this question! Worm castings are the only soil amendment that has passed through the body of an earthworm. That in itself makes worm castings unique! Keep reading... Worm castings are loaded with enzymes, plant hormones and nutrients that come exclusively from a worm's digestive tract. Only worms can provide these specialized, plant-friendly benefits, and they've been doing it for millions of years. Worm castings are coated in humic acid, a key ingredient for healthy soil. Humic acid improves soil structure by bonding to soil particles, creating spaces for water infiltration and healthy root growth. This is especially important in densely-packed and clay soils. Is your soil tired and stagnant? Worm castings are teeming with beneficial microorganisms that replenish depleted soil. Fungi, protozoa, nematodes and good bacteria are just a few of the microorganisms in worm ...