Or use herbicide if your going to spray the **** stuff in the first place, spray it and kill it. If you cut it you will cut it again in 2 months?
And, NEVER burn the stuff. Brings back memories of an incident from a Boy Scouting campout way last century. Weren't me, but a couple of kids on the trip apparently burned some of the stuff in their camp fire, breathed the smoke and got it in their lungs and throat. Put them in the hospital for sure. Same could happen with dust or fines I imagine.
Take care,
Dennis