I'm not sure how long this article on fungal control with vermicompost has been out, but it is interesting reading. The article says if you use 1 inch of vermicompost covered with a little mulch you can solve all the fungal problems in the garden. The tests and examples used are very poorly done, but I've seen poor science redone to become good science.

Have any of y'all used vermicompost on your lawn? On the down side, it is a very expensive product to buy, comes in small quantities, and if it requires a full inch plus mulch, that lets it out for preventive lawn care. You might get away with using it in places where you have lost most of the grass to disease - a brown patch patch, for example.

I used WormGold Plus several years ago but it was only in my container plants. I wish I had used it on my tomatoes and grapevines this year, I had fungus and incorrect watering issues with both.

If a small area of the lawn had fungal issues, I would try this. Large area treatments would be costly for me.

Here are two articles, involving George Hahn, one about him treating trees for pests and the other is state of Cali wanting him to label his compost a pesticide.

I used to get a mag call Garden Compass and they has several articles on the fungal and pest benefits of using worm compost but again it was Mr Hahn's research that they were using.

I wonder if there's an effect from simply having a ton of worms? They produce a lot of castings (worm digestion being terrible), so perhaps that's another reason to encourage them?