OK I have gotten a lot of responses, and no I am not trying to kill the planet--I just want to grow some veggies!
I live in Missouri, and have a lot of crab grass, thistle, and poison ivy, etc. The garden patch has been extremely difficult to control the weeds in the past couple of years.
I have tried mulching, almost 4" in deep across the whole area--does little if anything to stop weeds. I have tried black plastic, which seems to stop or slow down the weeds--but makes everything else that much harder to grow. I have sprayed repeatedly with RoundUP and everything else they sell at Lowe's, and actually the only one that worked at all was a no name brand that did kill the weeds for up to 2 weeks. But they came back. I have tried burning the whole area, looks ugly for a couple of months---but weeds came back. I have crawled around on my hnds and knees pulling all of them out and removing the roots and all. Still they came back.
Gardening should not have to be this difficult. Com'on folks tell the secret potion I need to fix things so I can have a good garden this summer.