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Heads up: those painted rocks you’re putting out might be poisoning your soil | DIY Bizarre Garden Stuff - Guest Forum

Heads up: those painted rocks you’re putting out might be poisoning your soil

I’ve been seeing a ton of people in this group painting garden rocks with cheap acrylic craft paint from the dollar store and setting them around their mutant veggie patches or scarecrow bases. I tested a few I found at a community garden swap in Portland last month with a cheap pH kit, and the paint was leaching some nasty chemicals into the dirt after one rain. If you’re gonna paint rocks, at least seal them with a non-toxic exterior varnish, or you could mess up whatever weird plant experiment you’ve got going. Has anyone else noticed their kale or funky gourds looking off after adding decorated stones?

2 comments

2 Comments

jenniferwells4mo ago

Oh man, thanks for saying this. I honestly never even thought about the chemicals in dollar store paint leaching into the soil. A friend of mine decorated her whole garden path with those rocks last spring and her tomatoes got all weird and spotty near the end of the season. We just figured it was blight or something, but now I'm wondering if the paint was part of the problem. That community garden swap sounds like a great place to test things, and I'm glad you caught this before more people ruined their soil. I feel bad for everyone who thought they were just adding a cute touch to their garden. Have you found any good non-toxic sealers that actually hold up through a few good rainstorms?

paulperez4mo ago

Wait, are you sure it was the paint that caused the spotted tomatoes? I mean, dollar store paint is definitely sketchy (and probably full of heavy metals), but tomatoes getting spotty near the end of the season is so common from blight or late-season stress that I'd be careful blaming the paint alone. @jenniferwells, I'd check the soil pH and maybe do a quick lead test kit from the hardware store before assuming the paint was the culprit. There are a few water-based acrylic sealers out there that are labeled non-toxic once cured, like the ones made for birdhouses or kids' furniture, but they still need a good week of dry weather before they're really tough. Honestly though, if you're worried about leaching, the safest bet is just to skip painted rocks near edibles entirely and use plain rocks or gravel for paths. It's a bummer because those painted rocks look cute, but not worth the risk with your food.