Depends upon the nutes given to the soil. Worms don't like Meth, or Chem Ferts. They will drown, they will die from lack of moisture. Sand is not good, poultry manure is too rich in Nitrogen, they don'y like milk or citric acid. I put worms & eggs into my soil, but it takes special care. For info on worms, see the book wrote by a Dude named "Shields" Plus the earthworm selling sites. "Worm Casting is the most hilghy, single nutrient known to mankind." Forget your plants, if you have good soil for worms, the Lady will be awesome, everytime.