I don’t know what it is but we have a lot of it in our yard (NE Kansas). It’s a spreading weed, kinda like crabgrass, and if you break the stem a milky white sap oozes out, right?
Ah, didn’t realize there’s a few species if spurge. I saw spurge on a few “Weed ID” webpages but images i found on subsequent googling didn’t match up.
tip-tapping away by phone, but why would you care?