Only after I became an experienced gardener and a naturalized southerner did I realize that those ubiquitous "Plants that Attract Hummingbirds" lists should be heavily annotated. Take ajuga. I don't know about you, but I have never had a hummingbird in my Cary garden in March, when ajuga blooms. The earliest I have seen one is April, and then it was merely the briefest of sightings. On the other end of the seasonal spectrum, we have pineapple sage, which I put in pots on my deck to maximize my hummingbird viewing pleasure. Pineapple sage is sometimes billed as a September bloomer, but in my yard it starts blooming in mid-October. The bees are delighted, but the hummingbirds have already left town.
I loaded up my garden with plants that are reportedly hummingbird favorites: Louisiana Iris, bee balm, hibiscus, agastache, torch lilies, turtlehead, and tons of different kinds of sage. Nevertheless, the only months in which I regularly spot hummers are May, July, and August. In mid-May, when the Louisiana Iris blooms, I see primarily males (distinguishable by their red throat). However, in late May and June, I see nary a one, despite my ostentatiously blooming bee balm and Rose of Sharon. From mid-July through August, we're back in business, with regular sightings of the all-green female hummingbirds. Interestingly, the males now are nowhere to be found.