I've gradually been collecting these seeds, but don't have a huge number to spare. If you want some, speak up quickly. Pam grew them from my seeds this past season and had very good luck with them. Take a look at her photos:
I have seen hummingbirds use them on multiple occasions, but they aren't a top favorite when compared with flowers like Salvia guaranitica, Silene regia, Ipomoea hederifolia, Lonicera sempervirens, etc.
I grow them in pots, but I'm sure they'd be fine in the ground, too. They're maybe a couple of feet tall, at most, and have gorgeous, brilliant red flowers produced in non stop profusion once they get going. They thrive on good care, but I've also found them to tolerate some degree of neglect. They don't seem to mind the heat, although western PA does not have a lot of extreme heat. I overwinter mine indoors as houseplants and take cuttings in the spring, so I don't need many of these seeds I've collected. By midsummer the plants from the cuttings (or seeds) are starting to bloom, and by late summer they're covered in blooms. Very nice plants.