Carolina Gardening: NC wildflower? weed? , 0 by wuzo15

wuzo15 wrote:
Hi, All,

I have this weed? wildflower? that started growing in my new lawn the beginning of July. I have been researching and can't come up with any ID. I hope someone can help.

I'm including 2 pics. These "growths" are about 5-6 inches tall and at the very tips they get tiny...did I mention tiny? yellow flowers. The flowers have 5 rounded petals. The plant itself kind of looks like an upside down whisk broom! They pull up easily after a rain, but I have literally THOUSANDS of them!

Thanks,
New-ish to NC