Well we will update ya'll on my use of the "new Roundup"
It looks like it is as good as the old Roundup I've been using!
I put it on with a paintbrush and was extra careful.....It appears that it has killed (or nearly killed ) my little Black Jack tree, It is starting to drop its leafs.
Luckily I have a backup :-))
So needless to say. this Ol' man is done with that stuff!