To me it looks like Lysimachia punctata or Mornada both right before flowering. In any case I see plant support in the form of netting. I do the same thing by other methods though to keep them from being blasted down by a heavy storm.

I agree,It's Lysimachia..a bit of a thug,but easily kept under control,by pulling up unwanted stems..lovely yellow flowers,and a good background plant..mine seem to be ok,supported by other plants,but I can see the need for the netting by your lawn..

Yes Bloomer. I support my clump by growing Hosta around them. The Hosta corral works very well and looks natural.

I want to say a big thank you to Bloomer and Loosestrife2 for your answer.

You're very welcome Jimmee

Always someone to help on Goy if possible,Jimmee...