That's what it's called, honest. Or Rapistrum rugosum to the scientific community.
This mustard-family annual is listed on the Texas Invasives list because it swallows whole fields, shading out spring native flowers and spreading like bad gossip.
If you find it in your yard, pull it up by the roots and throw it away, don't even compost it unless you're sure there are no seeds lurking. Truly. It's the plant equivalent of roaches.
Copyright 2009-2010 Kathleen Scott ,for Hill Country Mysteries. Unauthorized reproduction is prohibited.