Just remembered Cannas, DUH!
And Geraniums (the Pelargonium ones.)
4'o'clocks, Mirabilis jalapa.
Diamond frost Euphorbia.
This is all why I hardly do any plants just for their flowers. So much waiting & possible disappointment. Give me colorful foliage.
No such thing as too much heat for Tradescantia pallida. Or Sedums.