How effective have you found burning weeds to be when compared to ground clear or glyphosphate?

Hard to burn them when they are alive and growing.

I will burn off areas that have dried out, but to get rid of actual growing stuff I mix some glysophate with liquid soap, and some ground clear.

For me I think the glysophate kills fast but doesn't stop re-growth. So I mix in the other as well.

Might be better to glysophate and then a few days or a week later do the ground clear?

I am inclined to believe it is more about the setting you are in. In suburban and city locations, burning is frowned upon period. If you are out in the sticks, you could burn off the stuff you have already grown-up knee high instead of brush hogging it.

Green grass and weeds can burn, just not that well - which is a good thing....do you really want huge wildfires?

The blow-torchy sort of weed burner that attaches to a propane bottle used to work quite well. Once the feds made propane bottles have a safety valves and lower pressure, the weed burners stopped working. Dribbling out fire doesn't work as well as a flame thrower.

Good alternative to spraying chemicals, but they have to be pretty small or it will take forever.

I have a torch set up like that.

It works well enough I guess. Best for starting fires of stacks of stuff or melting ice off a roof so you can climb it.

I used it for some random weed kills maybe last year. Obviously it kills everything close to it. Big spot of dead. Then the weed came back before the grass did.

Hit some areas in the gravel drive and made black marks that looked worse than the weeds.