A few queries on overwintering

1) i have stock plants that i have already cut down once and at the moment they are in the plastic little greenhouse, i cut them down as advised so they flower in spring rather than at the end of summer, do i keep cutting them down and plant them in autumn outside ?? if i plant them out do they die down and re-emerge in spring?
2) I also have small aquilegias white and blues that grew slowly from bought seed, they are about 4inches atm what should i do with these too ?
3) ive also taken cuttings from my clematis montana 'mayleen' as shown by monty on gw but he didn't really say whether to cover them or not and whether to keep them inside or ouside, he did say it was important that the air around them was moist, ive watched it twice to check and he didn't explain, any ideas?
i don't have a normal greenhouse & i'm in the south east if that helps
help would be gratefully received
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I can't answer for the stocks or clematis sanjy, but I had aquilegias smaller than yours survive the winter outdoors in pots with no trouble at all, tough as old boots
what size pots fishy, didn't they freeze & do they die down in winter?
Yes new shoots formed in the spring. You will see like a little rosette of leaves emerge. And yes they must have frozen because we had a lot of frosts last winter? Hardy plants can withstand very low temps sanjy, they had to do it before us humans came along. Being a relative newbie myself, if you research the plant you can discover its natural range as regards climate, habitat etc. For instance, if a plant is native to the UK, the chances are you can leave it to its own devices because it will have evolved in these islands...as long as you provide the essentials. Light,water etc
thank you very much
You're very welcome
don't expect factual accuracy from MD ever. He lives on his own little planet.
As for the clematis cuttings - you only need to keep the air around them moist until they've developed roots and started growing. When that's happened pot them on and keep them in a sheltered corner outside or in a coldframe for the winter.
Gardening in Central Norfolk on improved gritty moraine over chalk ... free-draining.
so does that mean they need to be covered dove with a plastic bag or similar or just misted and no cover, this is my third attempt at clematis cuttings
They only need to be covered with a plastic bag or similar until they've rooted - then remove the cover - let them grow a bit and then pot on.
Gardening in Central Norfolk on improved gritty moraine over chalk ... free-draining.
thank you, i don't suppose you can help with the stocks question ?