Did you know that cornmeal is birth control for seeds? Sprinkle it on your garden and it will keep weed seeds from germinating and growing into plants. Of course, cornmeal will keep any seed from germinating, so don’t try this on your vegetable garden until your plants are established and you’ve ﬁnished planting seeds.
"Plants have best friends just like people do. Marigolds help tomatoes and roses grow better. Nasturtiums keep bugs away from squash and broccoli. Petunias protect beans from beetles and oregano chases them away from cucumbers. Geraniums keep Japanese beetles away from roses and corn. Chives make carrots sweeter, and basil makes tomatoes even tastier"
Wish I would have know this trick over 4 years ago. It would have saved countless hours of taking sod out & would have produced healthy soil also! Put cardboard & compost over grass in fall & by spring... you have healthy beds to plant in!