Dahlia tubers should be gently lifted with a garden fork, as we don’t want to slice them into pieces with a spade. We want to lift the tubers as a single root balls opposed to split tubers.
All you need to do is trick the dahlia tuber into making new shoots in late ... In about three weeks the cuttings will have formed roots. Split the root ball apart carefully and pot each cutting ...
"We want to lift the tubers as a single root balls opposed to split tubers. Once we have lifted dahlia tubers we should give them a thorough wash to get as much of the grit and soil off." ...