Just purchased a few PT seedlings off of ebay. They're about 3-4 inches tall each. I'm already wondering how to overwinter them. Right now they're in 4" pots. My options are as follows: place them in a cold cellar after they're dormant (I overwinter figs this way and they do well), place them in a cold frame that will grow kale/spinach throughout the winter, or try burying the pots in-ground. Cold cellar would be the easiest but they won't get any sun at all this way, but would that even matter if they're dormant (it doesn't for figs)?

Are seedlings of PT significantly less hardy than larger trees? I currently have a PT flying dragon in-ground that's about a foot and a half high and it sailed through the winter just fine.

I don't know how cold winters are where you live, but I have young PT seedlings growing in-ground and they survived our unusually long, cold winter without a problem. We had night temperatures of below -10C/14F.

I tested 3 or 4 PT seedlings last winter and all did fine with no damage.

I also kept many in my unheated garage in front of a door which has a window and they all did fine. I'd keep them as cool as possible in winter (below 50F).

Thanks all! I'll try a few places and see. Cold cellar is probably easiest and keeps things dormant. Perhaps one will go in ground as a test. Lowest temp here last winter was 8 degrees.

The Poncirus that I have growing, I do nothing special during the winter. All the Poncirus stay inside my warm greenhouse along with the many other citrus varieties that I am growing, and grows normally as if growing in the natural region of northern China. Over the winter months leaves slowly drop as Poncirus is supposed to do, and then the foliage returns in the spring, and continues to grow on - has done this for years. I see no reason to give any type of special care - they certainly don't need it. During the winter months the night temperatures inside the greenhouse are 55 to 60F, and days can reach 65 to 75-F, even during the coldest periods. Never ever a problem . - Millet

Will poncirus seedlings, that are approximately 1-2 years old in small pots,
survive in a garage with no light throughout the winter? Garage mininum winter temps reach 30F.

You shouldn't have a problem, poncirus goes dormant & drops it's leaves in winter.

Nicky

Your PTs will do fine. Try to keep the outdoors as long as possible.