I live in North Texas about 30 miles north of Ft. Worth. A couple of years
ago these little flowers started to appear in late August and early
September. They would bloom for a couple of months and then seem to
disappear. Now they have taken over about 25% of my lawn in various places.
They leave a dark ugly baren color after they bloom and are now spreading.
I talked to a kid at the local gardening store and she said it was Roadside
Asterisk. You have to spot treat it with weed killer that will also kill
the grass. She suggested I wait until the grass is dormant but does this
weed go dormant as well. She also said that pre-emergent and other particle
weed killers will not work on it. I tried to do an on-line search of
Roadside Asterisk but got nothing. Anybody know if this stuff goes by
another name or have any alternative resources or suggestions I can use?

Thanks,
Jim