Our black and brown dyed mulches consist of 100% recycled hardwood trees tinted with FDA approved vegetable dye and ground to a fine to medium texture (1"-2 1/2"). We have a mock cypress (golden in color) and cherry red mulch products also. These dye enhanced mulches should maintain their color longer than the natural hardwoods and should decompose at a slower rate. Once the dyed mulches are applied to your landscape it may be necessary to allow the mulch a drying time of 48 hours. Very unlikely, but heavy rains may wash colorant. Also, it is recommended that upon delivery customers lay down a tarp to protect possible staining to driveway.