Worm Castings - Natural Soil Fertilizer for Gardens and Growing

As redworms digest organic matter, their gizzard grinds it down while their intestinal tract secretes compounds that unlock nutrients, producing a water-soluble casting that's 5 to 11 times richer in nitrogen, phosphorus, and potassium (NPK) than the material they started with. Castings are also high in calcium, magnesium, and other trace minerals — and because they're already broken down, plants can take up the nutrients immediately. Earthworm castings for sale online. USA shipping only.

CLEAN & CONVENIENT - Worm castings are a nearly odorless alternative to cow manure, giving you the benefits of composted nutrients without the mess or smell. No need to keep your own worm bin — we've done the work for you.

GENTLE & BALANCED - Naturally neutral at pH 7.0, worm castings are gentle enough for regular use and won't burn plants like some synthetic fertilizers can. Once digested by worms, castings are fortified with essential microbes, bacteria, and slow-release NPK.

GREAT FOR OUTDOOR AND INDOOR GROWING - Whether you're managing a large outdoor garden or caring for indoor potted plants, worm castings help minimize plant disease, maintain water retention, and supply your soil with beneficial nutrients.

MAKE YOUR OWN WORM TEA - Steep worm castings in water to create a liquid fertilizer (worm tea) for everyday feeding, or apply castings directly in larger quantities as a restorative lawn treatment.

• Available year-round
• Available in 4 sizes, including bulk:
  • 1 Gallon Bag ~6 lbs
  • 3 x 1 Gallon Bags ~18 lbs
  • 5 Gallon Bag ~30 lbs
  • Bulk Pallet 25 x ~30 lbs bags (for pricing, contact our Sales Team at Sales@trueleafmarket.com)