Many plants do not fare well with Round up type weed killer applied around the roots. Most do fine, but some do not.
3 hours of 'pulling' the tops off weeds is a waste of time. The roots on most will re grow a stronger weed in a week. Spurge and some smaller weeds are dropping hundreds of seed by the time they look big enough to pull.
SO
Most weeds need to be dug up from underneath, and some have runners that need to be dug out as well. Weeds coming up in a plant? Dig up the entire root ball, put the plant in a wheelbarrow and strip the weeds (root and all) from the root of the plant you want to keep, and replant. Use plenty of Preen or other good pre-emergent herbacide on the same day to stop the weed seeds. Some of our most common weeds will not die from Round up applications, as it drips off and doesn't dry on the leaves (Nutsedge is one) .
In the end, monthly digging of the big stuff, and weekly pulling of the smaller stuff, while treating with Preen, will keep you looking good, and making headway towards fewer weeds.
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