Sunflowers come in much more variety than the big-headed snacky sort so popular. Right now Highway 49E north of town has these beauties along the roadway and railway.
Helianthus grosserratus, sawtooth sunflower, although the leaves are not all that serrated. Twelve feet tall and full of bees.
There's even this short version. Hairy sunflower, Helianthus hirsutus.
I'll want at least some of the short ones for my yard, and maybe some tall ones too.