I found 2 thuga seedlings in my row of the shrubs last spring. This spring I transplanted them to areas near the parent plants. One died. The other, with careful watering and protection from the big feet of a groundhog, deer and our dogs, has made it. I hadn't planned on potting it for the winter. Now I'm not sure of what to do. A fir tree seedling grew in a nearby area for 3 years. I potted it this summer and have it in the window of our insulated - not heated - garage. Growing evergreen seedlings is a new experience for me. It's much harder than growing other seeds/seedlings! Perhaps success will make it more satisfying!