Eradicating Siberian elms in my yard
My husband and I have tried a number of things to get rid of our Siberian elms: spraying Round-up on the smaller ones, cutting them down (trunk diameter about 5" or less) and putting Round-up or diesel on the stump....all to no avail. They don't die, and what was once a single trunk turns into twenty agressively-growing suckers. Is there something to put on the stump to really kill the tree, and what time of year should all this be taking place? These trees are the bane of our existence!
Try Ortho Brush b Gon (contains triclopyr). Roundup will work only when applied to green leaves of the plant.