Do I winterize my azaleas?
I have two small azaleas planted under my weeping white pine tree. Is it necessary to winterize them or are they pretty self sustaining? I have no idea what kind they are, they bloom the most beautiful lilac flowers in the spring, that's why I planted them. I must admit they haven't done much growing in the two years they have been in the ground. So now I am wondering if I am doing something, or not doing, I should be to promote growth.
Thanks in advance.