Haven't you got anywhere under shelter to put the pots? I usually start mine off in a tray, which I have done, and it's in the cold frame.

yes pot them up and keep them frost free. unheated room/porch /window sill in a shed/garage that sort of place.

Thank you both. Yes I can find a sheltered spot. Now all I need is a new pot!

I take it you checked the corm for vine weevil grubs and treated them? I ask as they core into Begonia corms and you do not see them until the have grown and you have a holey corm.

They have been sitting on some newspaper in the kitchen for a few weeks now and I thought I had picked the weevils out. What do you recommend I treat the corms with?

If the corm feel solid with no voids then it should be fine if it has been dried out. If you can see holes then give them a poke to see if any are still feasting with a pencil.

Do the weevils use pencils to feed with then? Just joking. Thank you.

You could always drench them in vine weevil killer, just to be sure.

I am thankful for all your advice. The begonias were delivered to my late sister's house after she passed away last year so I don't want to lose them. I think they are called Firecracker and are a lovely bright orange - her favourite colour.