What is the name of this weed, please? I garden in Maryland and it is all over my yard and gardens.
This weed has a basal clump structure.
That looks like creeping buttercup. I agree, it is tenacious. The best way to pull it is to use a dandelion fork or a trowel when the soil is damp. It has a tough, fibrous root system. I found the following weed guide for Maryland.