I ended up choosing a red variant called Ruby. The summer was cool so I did not expect much from my experiment but in the end it turned out that the Rubies did not mind. Enjoying the constant rains we had.
They grew to be strong and tall and even started to bloom late July which is early here in the north. My reliable Teddy Bears have not even started yet and it will be September before they start their show.
I think I will see red sunflowers next year as well! I was so happy with the results.
When the bud opens the color is red but it slowly fades to orange. They are beautiful to watch in the evening light which really highlights their colors.
PS. Bought my seeds from Stockmann and each seed germinated.