Using Polyurethane to seal wood containers

jab287March 20, 2012

I think I know the answer to this question, but looking for extra insight. I built several garden boxes out of Pine (12x36x11). I used Polyurethane (common wood-floor sealant) to seal the outside of the boxes and prevent rot.

The boxes will be used to grow vegetables. Can I use Polyurethane on the inside of the boxes or will this this result in toxic produce (tomatoes etc)?

Or is it advisable to use polyurethane on the inside and then cover with weed barrier/landscape fabric? I have received conflicting advice. has a post suggesting its ok to use Poly inside wood containers. Any input appreciated

Here is a link that might be useful: Garden

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calistoga_al ca 15 usda 9

I don't think it would make any difference to the plants. A pine wood box needs protection from the constant water and I don't think poly is the best for this. Your box would rot away pretty fast. Al

    Bookmark   March 21, 2012 at 9:05AM
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