Garden weeding help?!?!?

My family has a ok sized garden, but we don't have enough time to weed the garden. So it's overgrown with a crabgrass (I think) My dad has mowed over it a little while ago so it's pretty short yet impossible to weed. We don't want to spray it cause we grow some food. I live in Indiana do there... show more My family has a ok sized garden, but we don't have enough time to weed the garden. So it's overgrown with a crabgrass (I think) My dad has mowed over it a little while ago so it's pretty short yet impossible to weed. We don't want to spray it cause we grow some food. I live in Indiana do there isn't enough frost to kill all the weeds in winter any tips.
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