Flower Shop in PH or Park Slope?

I've been asked to procure 11 cosages for a photoshoot this Sunday. Can anyone vouch for a flower shop in the nabe where I can get cosages made?

The only place I can think of is the place on State and Flatbush called Midtown Florist.
If you are looking for something spectacular, some wonderful people bought me a beautifully exotic bouqet from a small florist in PS - It was called ZuZu's. It was right off 7th and I think maybe Garfield (but don't hold me to that). Pitu on the board knows the exact streets.

I'm not sure Midtown is still there. There is a place on 6th Avenue between Bergen and Flatbush, I think it is called Petit Fleurs. I have ordered two beautiful arrangments from them in the past.