Yes it dyes leaves, rocks, dirt, grass, weeds. Everything you spray so be careful not to get it on anything you don’t want black. As far as the leaves and grass it willdye them but once they blow away the spot that is not dyed will show and you will have to reapply. Best is to use two applications but remove grass leaves and weeds before applying because they will show spots once they blow away or once the grass grows.
Definitely doing this.
Does it dye leaves and grass also that has fell in the mulch beds?
Yes it dyes leaves, rocks, dirt, grass, weeds. Everything you spray so be careful not to get it on anything you don’t want black. As far as the leaves and grass it willdye them but once they blow away the spot that is not dyed will show and you will have to reapply. Best is to use two applications but remove grass leaves and weeds before applying because they will show spots once they blow away or once the grass grows.