Answer by
primatefreak (1616)
The dyes or colorants used to color mulch should be environmentally safe, non-toxic to humans, pets and other animals. There is a large variety of colors available. Can check colors online by using search engine with phrase "mulch dyes". Heartland Enriched Colorant by Amerimulch is one company offering mulch dye. Mulch can be placed in cement mixer and add colorant.