When scalding hot water is poured directly on the weed, it singes the taproot and prevents the weed from growing back
It kills the bacterium that allows the weed to thrive while also destroying the plant
This method, however, cannot be used in flower beds because the scalding water will kill your plants as well
To keep weeds out of flowerbeds? Simple. Disperse used coffee grounds around the area.
They not only prevent weed growth, but they also fertilise the plant.