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Name: Aubrey
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Is poison ivy "immune" to herbicides because of the urushiol oil? I know that roundup works by blocking essential enzymes but I can't figure out why it won't work well on poison ivy. Even the herbicides that are specifically for poison ivy don't work that well. My research is on "why plants die." I can't get the poison ivy to die.

There are several messages about this topic here:

Anthony Brach Ph.D.

Herbicides DO work on poison ivy. Roundup will not work very well, Garlon should.

J. Elliott

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