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Avatar for Samdewald
Jun 13, 2020 1:14 PM CST
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My boyfriend is treating our fence with Thompsons water seal and it misted onto my veggie garden. It is visibly speckled onto the leaves of all of my plants. I tried wiping it off with a wet cloth but its already dried on. I read online that it is non-toxic to plants, humans, and animals, but I'm still skeptical. Should I rip out all of my plants and buy new ones or will they be okay? More importantly, will the produce be safe to eat when it comes in or will it have absorbed whatever chemicals were in the sealant?
Jun 13, 2020 4:53 PM CST
Lockhart, Texas (Zone 8b)
Greenhouse Hydroponics Region: Texas
Essentially, Thompson's is parafin wax and alcohol with some coconut oil diethanolamide (foaming agent found in soaps, shampoos, etc.). So not poisonous or anything, but not particularly good for leaves that are organs of respiration, hence the spots. Parafin wax is used on fruits and vegetables to enhance eye appeal. You've likely eaten some.

Kind of takes the shine off Thompson's as a magic wood preservative, doesn't it. Just as with fruit, more appearance than substance.
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