Black Castings™

Earthworms are vital to the soil. Their burrows allow air and water to flow, but more importantly, they digest organic matter and excrete it as worm castings, a vital component in fertile soil.

Unlike chemical fertilizers, Black Castings™ will not burn plants or trees, and are completely safe to handle. Black Castings™ also break down much more slowly than traditional fertilizers.

Many chemical fertilizers are loaded down with huge quantities of quickly-available nutrients, but plants can only absorb so much in a given period, meaning everything that the plant doesn’t use right away is wasted.

Black Castings™, on the other hand, break down much more slowly, feeding plants only as needed, reducing waste and increasing efficiency, making Black Castings™ very cost-effective.

Black Castings™:

  • Are produced by earthworms fed a high-quality diet
  • Add organic matter to the soil
  • Improve soil structure
  • Are not produced with yard waste
  • Are not made with horse, cow, or any other grazing animal manure
  • Break down slowly, reducing the need for repeated applications, making Black Castings™ very cost-effective


An organic vineyard is devastated by Black Rot. An evaluation of an organic program developed by Vermitechnology Unlimited shows incredible results.

Reach Us

Vermitechnology Unlimited
P.O. Box 130
Orange Lake, FL 32681 USA

Tel. (407) 212-8107 | Fax. (352) 591-4550


I treated this Westchester County, NY Little League Field with the Sports Fields Fertilizer Program. So far, 156 games played on the field and it looks better than last year when the first game was played. It is holding up the best that they have ever seen. This is the first year that the grass under the shade trees of the estates has grown in super well and not much different than the grass in full sun. It looks full and healthy, like I have never before seen using the chemical fertilizers.

I have switched all of my estate landscaping and maintenance accounts from the chemical fertilizers to the pure Black Castings™ and the VermaPlex™ soil biological inoculant. This “stuff” really works!
– Tom Karzan, Westchester Co., NY