Prostrate spurge Euphorbia supina
IDENTIFICATION — The stems and undersides of the leaves of 2-in.-tall prostrate spurge have a red tint. If you break the somewhat hairy stems, they ooze a milky sap.
FAVORITE CONDITIONS — This mat-forming annual weed is often found from summer to fall in dry, gravelly to sandy soil in full sun. It thrives in full hot sun, even coming up in cracks of concrete, and is a prolific seeder.
CONTROL — Despite having a central tap root, prostrate spurge is easy to pull or hoe.