Potting medium for clematis
I have been reading this forum all summer and have gleaned a lot of wonderful knowledge. I do have a question that I cannot find the answer to though. I will be placing 2 clematis' in pot this fall and plan to overwinter them in the garage. My question is what type of potting medium should I use in the pots? All I can find is potting soil with fetilizer that lasts 3 months such as Miracle Grow. Is this all right to use? Thank you for any advice.