Posted: 13/01/2014 at 08:41
I always pot up in dry compost initially. Ok, it's mild here but tubers in dry compost will be warmer than kept in their packets.
Chicky, not sure it's essential to wash off your tubers. As long as they are dry a bit of dirt won't hurt. If you ordered now they will prob arrive next month....maybe later.
I think the earlier dahlias are started off the bigger they will become this season