AmayeZeen: November 2016

One of the buds of the weed flower I collected yesterday opened up this morning. Happy. This one has the seed pod/fruit in the middle of the stamens I didn't notice in the other flowers yesterday. Maybe I wasn't looking.
I wonder if the beautiful flowers were of an "useful" size, like the size of the roses or carnations and etc, would the plant still be considered an invasive weed or pest?