I've been using Roundup as part of my technique for getting rid of the French broom that's threatening to take over my hillside. I paint it on the lower stem and often abrade the lower stem to assure absorption. I then wait about a week for the glyphosate to do its dirty work on the root system, then pull the whole thing up with a weed wrench. (I'm also careful to remove any seed pods from the broom and dispose of it plastic bags.)
My question is about the concentration to use. I used the recommended dilution in the directions, which gave me a concentration of less than
1% glyphosate. Using that, I didn't really see much dieback in the broom plants after a week. I notice that Roundup that's sold for direct application has a concentration closer to 2%. Is that the concentration I should use? Perhaps stronger?Let me know, Peter