Do all worm castings contain the same amounts of beneficial microbes?
A. No, depending on the feeds they are given, the worms will feed on the organic matter and extract the microbes and the resulting microbe content of the casting is dependent on the quality of the food. Some worms are fed either grain or paper sludge and these are high in cellulose and OK for the worms, but the resulting castings are low in Microbial Life. But still remember, the worst worm castings are better than the best chemical fertilizer in the long run.
