Posted: 06/09/2015 at 19:38
Hiya there squelchyno
just do nothing....let them die down naturally. frosts will blacken the foliage
yes, bring them inside away from frosts. Keep dry. You can take tubers out of the pots or leave them in the pots. i prefer to take tubers out,,turn them upside down for any moisture lodging in the base of those old stems to drain away. check the tubers are firm and dry. You can then put them in cardboard boxes wrapped in newspaper. Important to keep them frost free. Check they dont dehydrate too much. In spring pot dahlias into your pots again but still keep dry. As soon as you see shoots start to water just a little. You need to bring them into the light then too. The earlier you start them into growth the bigger and better your dahlias will be.