Hello all - I have a couple of new weeds that have invaded my lawn. Front lawn was totally reseeded in the fall (however I've recently reseeded some areas that did not have good coverage last year). The first picture is a weed I've found just in the last week or so and don't know what it is. I didn't put down a preemergent yet so I'm guess that's where these came from. The think parts of the fr

Next photos are of the back yard, I had patches of this weed last year but have no idea what it is or how to kill it.

Would a broadleaf herbicide (2,4-D perhaps) do the trick on these and should I wait until after new seed germination to spot spray these weeds?