We have quite large vegie gardens, I am battling what I think is chickweed, it keeps coming up everywhere, if I plant seeds it comes up with them and there are millions literally, have tried heavy mulching, it eventually comes through that, I certainly don't want to use poisons but I am at a loss how to get rid of it. Weeding by hand is overwhelming and after spending a couple of hours daily it looks like I am getting no where especially where new seeds are emerging, I have planted carrots, they are surrounded by it, if I pull the chickweed out the tiny carrots come out with it. Any suggestions please ???