These towering fall hummingbird flowers start blooming in late summer all over the country. There are many different species of ironweed, so seek out those native to your area to find the best fit.
If you're not sure when a climber or wall shrub is best pruned, a useful guide is to prune spring and early summer-flowering plants when their blooms fade. Those flowering in late summer usually ...
Some bloom in spring and summer while others save their flowers for early fall. You can plant cultivars that bloom at different times to ensure a steady supply of flowers in your garden.