Only one sunflower managed to bloom this year. I had several varieties growing but Autumn was simply too cool for them even though the summer itself was warm.
Luckily Sunspot (Helianthus annuus ‘Sunspot’) grew large and beautiful bloom to save the summer. I had it growing in a large pot with other flowers.
Sometimes this just happens up here in the north. For certain flowers our summer is simply too short sometimes. Better luck next year.