Hummingbird and Butterfly Gardening: New thread: Hummingbird SUPER PLANT #3, 0 by HBJoe

HBJoe wrote:
Hummingbird SUPER PLANT #3 was originally native to Mexico and Gulf Coast states. Now it has naturalized over a much wider area from Texas through parts of South Carolina. Pure strains of this semi-wooded plant may reach 8' x 8'. Dwarf varieties are much smaller. Horticulturists claim temperature tolerance down to about 25 degrees, however a more conservative approach might be prudent. Growth trials in Southern Virginia (7b) indicate severe damage at freezing point. Even with mulching, plants will not sprout again from the roots when temperatures drop into the teens. Blooming will not occur when night time temperatures dip below 45 degrees. Yet, hummingbirds find the clusters of yellow, tubular blooms irresistible. Above zone 8b, growers should plan on potting the plant and bringing it inside when cold weather arrives. Flowers from this plant produce such abundant nectar flow that it may be a regional favorite for hummers. In the photo, depth of field was deliberately distorted to render the blooms slightly out of focus. What is this plant?