Aren't they amazing and SO HAPPY!!!
I've never grown sunflowers before this year either. They were finicky to start with, I must have lost 6 or 7 of them, but once they got to about 2 feet tall, they grew thicker and stronger. Next year I'm going to plant a couple dozen of them to make sure I have several reach maturity. I love the paler versions, like this lemon one. I've seen some almost white, which I'll try to find too.