Kill weeds without store-bought chemicals by dousing them in boiling water, salt or vinegar, reports Good Housekeeping. Weeds can also be killed by covering them in sheets of newspaper and depriving them of sunlight.
Remove weeds from a garden by hand-pulling them from dampened soil. Prevent weed growth by building small dividers for garden plants or planting a ground cover, reminds Good Housekeeping. Certain weeds, however, are edible and can be used for cooking once pulled from the ground. However, weeds should not be eaten without being clearly identified first. Use a reputable plant field guide for assistance in weed identification.