I love the dahlia gardens that I’ve visited in France but I haven’t mastered the art of growing them well. This was my second summer trying and I have some questions for more experienced people. People who actually grow them year after year. Question 1. Is this bad genes or something that I did wrong?

I also had a lot of these (nice!)

I’m trying to save the tubers, just to get the experience; will I want to use them?