Texas Gardening: I need weed talk, 1 by sybram

sybram wrote:
I already have weeds in my flower beds. I applied corn gluten meal to all yesterday (raked back mulch, then covered it again after putting meal down). I'm headed out now to water it in. My question is, since some seeds have obviously germinated, does that mean my preemergent treatment is all for naught? Do all seeds germinate at the same time?

Also, a woman was out here yesterday who said, "Oh, those are winter weeds, and they'll die when the sun hits them. She seemed to be knowledgable, but I'm not sure she's right about that.

I did learn some good facts about all that on the http://www.natures-guide.com site. That's the gluten meal I use.