I was under the impression that a lot of people sow in their greenhouses and basically just leave the seedlings there until it's time to hoof them out -- however they will presumably be very cold from time to time in these conditions. Would this be OK?
I was hoping to sow them into spent compost (seedlings won't need a rich medium, right?) in my "shed" (actually a single layer brick outhousey thing), then move them to the blowaway greenhouse. Should they stay indoors for the duration of winter, to keep them from getting too cold?