Bring me the sunflower crazed with the love of light
-- Eugenio Montale
And life itself exhaling that central breath!
Top: The seed packet said Maximillian Sunflower (Helianthus maximilianii) but none of the pictures I found on the internet look like this. Plant is about 6 feet tall and flowers are about 5 inches wide.
Bottom: A "volunteer" sunflower, planted by birds, with Western Tiger Swallowtail. Probably a Common Sunflower (Helianthus annuus). Flowers 4 to 4 1/2 inches wide. This plant is about 7 feet tall and has 40-50 blossoms on it, with more on the way.