Originally Posted by
Formal Gardens
No, as long as the spray has been absorbed which normally doesnt take long. If I turn up to a job where the weeds are long and there is enogh space between the plants to get the brushcutter in, I just knock the weeds down, then hit them with roundup. By the time I go off and pickup the mulch, the spray has been absorbed and I mulch thickly straight over them. You get the odd bit that will come through, but most of it does'nt emerge through the mulch.
The boiling water knocks the weeds down very quickly. Within 10 minutes they will be shriveling up. If there was something available that could be battery operated (Maybe like a cordless drill?) that can keep the water in a spray bottle at boiling temp, so that small amounts of boiling water can be put out, it would be a great!