Garden weeds?

cut at ground level; if they are annuals the root systems will decompose and not come back; if they have re-seeded, cover the entire area with black plastic when the ground temps reach about 55-60f next spring; this will kill any seeds trying to germinate by the heat trapped under the plastic. Remove the plastic, and plant your garden as usual when the ground is about 70f; you can mulch now with cardboard and wheat straw; the cardboard will decompose, as will the straw over the winter;

Cover your garden area with a tarp or thick plastic with bricks or something weighty on top. This should do the trick.

Mix Blue Dawn Dish Detergent w/white vinegar the amounts are on line. It will only kill weeds.

Thank you!