Answer: The problem you describe doesn't sound like an easy weekend project. In fact, I think you'd be better off hiring a landscaper to come in and grind the roots down. Here's why: as long as there is stored energy in the root system, it will continue to sprout. Wherever it sprouts it will, through photosynthesis, transport energy back through the roots, which will give it more stored carbohydrates to produce new shoots. If you were able to kill it chemically, as the root system decomposes, the soil level will sink, which could cause future problems. So, I suggest you hire a landscape contractor to grind the roots down and then backfill the area so it won't sink.
Wish there were an easier solution!
Q&A Library Searching Tips