Hi - This looks like mulberry weed (Fatoua villosa). It is an annual weed that spreads by seeds, so a key to managing it is to remove the plants before seed dispersal. You can dig out the plants and put them in the trash (not compost).
Please see the following webpage for more information and management options.
Thank you -- that's definitely it. What a nuisance! That, garlic mustard, and stilt grass -- we have it all!