This is my first year to plant Clematis, I planted a Nellie Moser about 4" deeper than it was, as recommended, but I broke the only stem about 3" below the ground. When I realized this, I dug down to the break and cut it off. I have left this open, hoping it will get new growth. What should I do. I also had a Sweet Autumn Clematis planted in a large tower type pot, the wind blew it over and broke it at the root. 6 weeks later there is still no new growth. Should I plant it in the ground deep, or what. I know that's a lot for my first question, would love some help. Thanks