Should I Spray The Ivy Around My Pine Trees?

Pine spray

Q: I am covered up with English ivy. I have cut vines on the trees but is it safe to spray the ivy on the ground around my pine trees with glyphosate without harming them? 

A: Glyphosate (Roundup, etc) has an extremely high ability to bind to soil particles. Once bound, it is broken down by bacteria in the soil before it travels to underground roots. Exposed tree roots can pull in a small amount of chemical but as long as the spray doesn’t hit too many of the roots, no harm will be done to the tree.

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