Can poison ivy poison my herbs?
Hello I am digging out a spot for my herbs. I will put topsoil down on top of the dirt to grow the herbs. If there was any poison ivy at all (not sure) but dug down below it, would I have to worry about the herbs absorbing the ivy's poison?
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Great question! If there is any in the area, it will soon turn up. Then I would relocate the herbs and treat the area. I might even consider ditching that batch of herbs, not worth the chance. Go ahead and see what happens and just keep your eyes peeled for any sign of poison ivy.
I would wait one year. The oils and resins in the poison ivy are probably in the soil. Also a great chance more PI will come back. Treat the area with a PI herbicide. Try not to use Roundup or you will need to wait longer. It tends to degrade the soil from nutrients.