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Although I have a lot ofAlthough I have a lot of experience planting bulbs, I have never planted dahlias. I live in Petaluma CA in Sonoma county. On impulse I bought two bags of 10 each dahlias at Costco. Now I see they are tubers! I had planned on putting them into two large pots (like I do bulbs), but reading here you seem to suggest 1 tuber per pot! EeeeK! Really? Do you have any ideas about how to handle 20 tubers short of putting them in the ground? This soil is solid clay! The tubers are: Blue Bell, American Dawn, Karma Pink Corona and Karma Corona. Any help would be seriously appreciated!