It covers with twigs against drying and wind on the holofrost. Who knows how cold it will be. If there will be snow and how much there will be so that it does not break. Neither at home, when I was with my parents, nor then in my gardens, I made any special arrangements. I just tied the ties because I had them wider than taller. And before the cold, I flooded them all a lot. It wasn't until the spring that I cut and fertilized. (wasntme) Dad bent the tree rose and covered it with twigs. Then he found it nonsense and he didn't do it anymore. He just always turned the snail's roots up. And in the spring he brought it back down. The shepherd liked it very much. He found out by chance when he was a lot and he dug him in the fall. In the spring it was like new and grew much faster than the unconverted ones.