Lupin Seedlings Overwinter ?

I have just grown some Russel Crown Lupins from seed , they will be ready for pricking out into 3" pots in about a week. Now I have never grown from seed so late in the year , so what is the best way to overwinter them ? Do I leave them outside in a sheltered spot , or put them in the Green House . I plan to plant them in my flower bed next spring.

TIA

 

I know September sowing seems a bit late , but T and M advised Feb to June or September August ? So not knowing the life cycle of a Lupin , will my seedling grow and then die back in winter and regrow in the spring for planting out ?

http://www.thompson-morgan.com/flow...nial-seeds/lupin-hybridus-tutti-frutti/7149TM

 

I keep all my "hardy" seedlings in a sheltered spot over the winter on a mini greenhouse stand, no cover, they do as normal die back over winter and reappear in spring, the main problems I encounter is, as the pots are so small they dry out quickly in dry spells, so need to be kept an eye on when the weather starts to warm again.

 

Thanks Pam , I'll do it that way . I have a nice sheltered spot behind my shed , where they can go . I also now put a watering reminder on my calender so I check GH plants etc every 2 weeks through winter . Lost too many plants by forgetting !