It might be one of the many rudbeckias (black-eyed Susans).
hortster

Echinacea may be ?

Here is a link that might be useful: Echinacea

It looks more like echinacea (coneflower) than rudbeckia.

If it's coneflower, it will have a purple daisy-like flower with a dark center in late summer. White petals are also possible, or if it's an exotic variety, pink or orange!

Echinacea doesn't spread so fast as to be invasive. It's attractive to bees and butterflies, and the dried flowerheads can be left for winter interest. I very much like them in my landscape and try to dig and transplant any young seedlings--the larger plants do NOT transplant well because of their long taproot.

I agree. Coneflower, a desirable perennial.

Thanks all!

This is incredibly helpful.

My wife said she thinks it's the coneflower. I'll do my homework; I've been looking for a good source for general reference / wiki of some sort that also might cover how to move plants around, suitability for containers, etc.

Of course, that search is what led me here ;)
Thx
Andrew