Centaurea Montana (cornflower, mountain bluet) -- free

Anyone in need of centaurea for your garden can rectify this problem by stopping by 24 North Terrace and grabbing some plants from the bucket on my front steps.  They look a little rough at the moment, but this plant is indestructible and I can pretty much guarantee survival.  Help yourselves!

I just stopped by and picked up a few plants from your front stoop.  Thank you very much! 

Shade tolerant to any degree?

There are a few more out there!

nakaille, ours grow vigorously under a birch on the south, and between a big street tree on the east and our house on the west.  Mostly shaded, but most of the area does get a couple of hours of sun.

All gone -- enjoy, everyone!