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