Brown dyes retain their color for the longest time, while blacks and reds fade more quickly. [2] X Research source Compare mulch chips in multiple colors or look at mulch beds in your neighborhood to see how they look in big patches. [3] X Research source If you choose a similar shade to your current mulch, it won’t be obvious if you miss a spot during the dyeing process.
Most dyes take 3-4 hours to dry, but might need as long as 24 hours to fully cure. Try to spray in the afternoon when the dew has evaporated and the humidity is lower.
Once the debris is gone, examine if your mulch is evenly distributed. Spread the mulch to fill in any sparse areas (mulch dyes won’t color dirt, sand, or gravel).
If you don’t have tarps, spray your plants and concrete with water and keep them wet while you dye—the colorant won’t adhere to wet surfaces. [8] X Research source
Pump the sprayer a few times to pressurize it. If you hear a hissing sound, double check that the lid is securely fastened. Use a plastic measuring cup that you don’t use for cooking to measure out your dye if there isn’t one provided with your product.
One coat of colorant is typically enough. Add a second coat if you suspect you missed some spots or want to make the color deeper or more saturated. If you accidentally overspray onto concrete or a plant, spray the surface or object immediately with clean water to keep the dye from sticking.
Scrub in a circular pattern and then rinse away the suds and lifted dye with a hose. Scrub stubborn stains on concrete patios or driveways with hot water and bleach. Let the bleach rest on the stain for 30 minutes, then spray away. Dump leftover dye from the sprayer in a gravel patch or utility drain, then flush the tank and nozzle with fresh water to clean it out.
Some products may need as long as 24 hours to fully cure and set.
