Avoiding toxic soil in raised garden beds

My husband, bless him, bought treated wood to build me four large raised garden beds so I can plant veggies and flowers. He’s got them built when I think to ask if he used treated wood – and he did. So now I’m wondering what’s a safe wood sealant that he can put on the wood so the chemicals don’t leech into the soil? Can we use a spar varnish on the inside?
Any suggestions or advice would be most welcome.
Thank you!

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1 Comment To "Avoiding toxic soil in raised garden beds"

#1 Comment By Downtoearthdigs On 07/21/2017 @ 6:42 pm

These links will help you make decisions regarding the safety of the treated lumber.

https://extension.missouri.edu/p/G6985 ^[1]
https://extension.psu.edu/plants/crops/esi/treated-lumber ^[2]

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URL to article: https://questions.gardeningknowhow.com/avoiding-toxic-soil-in-raised-garden-beds/

URLs in this post:

[1] https://extension.missouri.edu/p/G6985: https://extension.missouri.edu/p/G6985

[2] https://extension.psu.edu/plants/crops/esi/treated-lumber: https://extension.psu.edu/plants/crops/esi/treated-lumber

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