I would like to know what kind of plant this is. It is growing like crazy.

Meg

Hairy crab weed. (fatoua villosa).
You are going to want to stay on top of this one...
I rarely advocate tossing weeds in the trash... But I totally make exceptions with this one.
From seed to bloom in two weeks, 1 plant becomes thousands in a month or two... One of the weeds spread by the nursery trade.
The original plant purchased from the nursery died long ago, and this pest is near impossible to get shut of.

Thank you, I thought it was really pretty, but i guess I will have to pull it out, that should take some time as it has really taken over.