After the freak snowstorm last year in October a number of trees had been damaged on my property. A couple have suffered so severely that I decided to take them down and landscape around them.

My question; I wish to simply cut the ornamental tree down to ground level, leave the stump and let it rot away. What can I use to do that and speed up the death of the root system ? I don't want it to sprout new shoots or suckers, and I don't want to dig out the stump.

I also have a tremendously vigorous, invasive, trumpet vine which I also wish to get rid of. This thing seems to be popping up shoots everywhere.

Thanks ! Brian