Dahlia Corms

Oh decisions decisions !! Do I lift or do I cover

 

Depends mostly on your soil type really if it heavy or clay I would lift them.
If it sandy free draining soil I'd leave them in and just cover them with a mulch of bark or straw and place a pot on top.

 

If you want to take cuttings next spring then lift. Other than that its the risk of rot, and them starting flowering "late" - which may be worth the risk on both counts.

 

I need to try and keep these four Dahlias for next year.
So I have surrounded them with polystyrene and covered with fleece hoping this will keep them frost free in a cold greenhouse.
It may work it may not.............

 

My Dahlia corms are drying out now , I'll store them in a cardboard box ,in shredded paper , in a cool garage ( two sides attached to the house ).
@roders - I have stored my Begonia tubers in a mix of polystyrene and damp old compost this year . I always stored the Begonia tubers dry but only got a 70% re-sprouting success rate in spring. So lets see how a damp storage goes ........?