Dig it up completely and replace the soil. There are not too many grasses that will displace clover. If the grass is bare around a yard that has lots of trees, you might consider keeping the clover--at least it is green!
Thumb and forefinger; to pinch and uproot the weed, works well with small weeds. Pigweed, lamb's quarter and others are fine to eat in a salad or steamed like spinach.
The best defense is a good...
What you can do is put black plastic (like a garbage bag) over the area and leave it there for about a week. This will stop sunlight hitting the plant and stop photosynthesis as well as cook the...
The best weed control is pulling and hoeing. Do you really want to use poison in the garden where your food is growing? Pulling weeds or gently cultivating around the veggie plants is by far the best...