How Safe Is Mulch Dye For Your Plants?

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Dull, dry garden beds can be an eyesore, but there's an easy solution that can allow you to take your garden from drab to fab on a budget: mulch dye. Generally speaking, mulch dye is safe, as most formulas are non-toxic. When sprayed onto your garden beds, it can make your mulch look brand new without the hefty price tag. Mulch dye is normally water-based and made with natural dyes. However, some mulch dyes could be toxic, so you will want to do your research before choosing a product. Cheaper dyes could have toxic chemicals included, so it's best to opt for a higher-quality, potentially more expensive, mulch dye that clearly lists its ingredients.

For example, EnviroColor's Cocoa Brown Mulch Dye is transparent about the ingredients included in its dye. On the brand's website, it states that all dyes are water-based and don't include harsh chemicals. The company also said its dyes are non-toxic, non-flammable, and safe for the environment. Some other products, like PetraTool's PetraMax Black Mulch Dye Mix, aren't as clear on the exact ingredients. However, PetraTool maintains that its dye is safe for pets and children if it's used as directed.

The amount of mulch dye you use doesn't make a difference in its toxicity, especially if you're sure to choose a brand that relies on natural pigments — you just need to follow the instructions on the bottle. However, there are some things you should look out for. You will want to find a dye that is weather-resistant. You will also need tools to use with your dye, including a pump sprayer and protective clothing. Once you have those, you can fill the pump sprayer with the dye, clean your mulch beds, and start spraying!

Unfortunately, one downside of mulch dye is that it can discolor your concrete and walkways, so unless you're planning to stain your concrete a new color, it's necessary to be careful with your application. It can be hard to spray your mulch dye in a straight line, and the powerful pigments can cause marks on other porous surfaces. Envirocolor suggests using a sprayer with a fan tip because it will be easier to control when applying. If you want to dye your mulch bed, the color will typically last for an entire season. However, if you get a darker color, like black, it could last longer.