I want to have a large mum garden. Where can I purchase the greatest variety of plants. Does the U of M extension service sell them especially new varietys.
Ramsey County Minnesota
The university does not sell plants. The Arboretum (which is affiliated with the University extension) holds a plant sale in the spring. You could call them to see if they will be offering any mums:
There are specialty nurseries who grow mums - here is one of them: