Hollyhocks.

Thank you!

Attracts butterflies, esp the Painted Lady (Vanessa cardui)

How pretty. :-). Can't wait. Do you know if they grow big and if they last a long time?

Size varies on variety, but generally no taller than about 4-5 feet.
They're biannual, which means they bloom on the second year and then they're done.
However, they are prolific reseeders and you can keep a bed going for years.
If you don't want reseeding, just go for the double flowering varieties.These won't attract hummers, though.
Plant c Mallows and Globe Thistle to attract the Painted Lady (Vanessa cardui)