Worm castings don't have very much NPK for the most part. It would depend a little on what they were fed I suppose. Most commercial worm castings are in the 0.1-0-0 range for NPK.
Worm castings don't have very much NPK for the most part. It would depend a little on what they were fed I suppose. Most commercial worm castings are in the 0.1-0-0 range for NPK.