u/Certain-Jackfruit320

My beds and lawn are being completely invaded by Goutweed. I fear it's rhizomes will have grow in/around some trees and perennials in the bed (my poor hydrangeas!) as well as into the lawn.

I'm reasonably anti chemical warfare, I've never used a weedkiller before. I hear success may be possible with glyphosate to drive the goutweed back.

If I dab some glyphosate into the leaves, is there a risk to any other plants in the garden? Given that the rhizomes may well be looped all around the roots of my plants?

The only other measure I've read about is to tarp the area, but with where the Goutweed is, I would imagine it would just grow beyond the confines of the tarp!