I've got 5 or 6 different dahlias in pots, all looking quite happy. I've just built a long wooden trough - are they OK being repotted, and grouped together, or do they react badly?
Retain as much soil as you can in the transfer and you should be fine
Thank you! Will try moving them tomorrow. They're looking much more lush than they did last year, can't wait to see their flowers!