M-ROOTS® is a blend of the natural organic ingredients in dryROOTS® plus 18 species of endo- and ectomycorrhizae. M-ROOTS® should be used on all plantings in disturbed or poor soil, including new construction and foundation plantings. M-ROOTS® is added insurance for all valuable trees and shrubs. To see more great products like this, check out the rest of our lawn and plant fertilizers.