spotted spurge, Chamaesyce maculata, Euphorbia supina, parking-lot-mulched-tree-island-weed
Prostrate spurge is a late-germinating, low growing, mat-producing summer annual. Spurge is very often found in un-irrigated bark mulch common to parking lot tree islands, crevices and boulevards. Spurge will tolerate some shade but thrives in harsh full-sun baked sites. The reddish somewhat hairy stems of spurge will produce a milky-white latex when broken or injured (similar to dandelion).