I have no idea - probably the sooner the better. The only problem is that I am now getting daily e-mails from T&M. Probably the price to pay for such a great deal.
Not really a gardener Tilly - just read it on line. I would have thought they'd be OK in pots though, they could be covered or moved into a shed if necessary.
Margo, that's a good idea. Get them planted in pots and put them in the garage if it turns cold again. I'm going to need a few pots and a few bags of compost. :-)