Do you get many different types of sunflowers each year, that are not at all like the ones you planted? I also have noticed that the red and orange colors seem to breed out. Guess I'll have to just keep buying some red ones and keep introducing them. I have found some wild ones that grow along the hyway around Woodland, california, they seem to be very drought tollerant as they get no water all summer and thrive. I got some seed from some and will give them a try next spring. My sunflower forest was the center of my garden!