Hello Dahlia Lovers – New grower here and I ordered these 4 varieties and the tubers are coming next week. I plan to grow them in containers what size container should I use? Also what is the best soil and fertilzier for them? Thank you so much for your help and helping me learn about growing them
by EfficientInterview68
2 Comments
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I personally use grow bags. I use minimum 10 gallon bags. Only 1 tuber per bag. You could probably get away with 7 gallon.
Dahlias like space for their roots to spread out. Plus they can send up several stalks. General guidance is 12-18 inches of space between plants.