Salvia is a great annual for hummingbird flowers, especially the red varieties like Salvia splendens. It provides a consistent, long-lasting nectar buffet by blooming nonstop from spring until the first frost. It is a garden staple because of its spike-like form, which is covered in tiny tubular flowers that attract hummingbirds (https://abodelook.com/knowledge-hub/hummingbird-flowers/). This form makes it easy for the birds to feed efficiently.