Q.Pink muhly grass
I would like to grow my pink muhly grass in containers. What would over wintering require, and can the flowers be cut and dried? Thank you for your time and all your help.

Muhly Grass can be grown in large containers.
Use a rich loamy soil and make sure the container has good drainage.
Watering is key with container plants and you need to make sure you check the soil, daily when temperatures are hot and conditions windy.
Watch for signs of the plant becoming root bound, center die out is an indicator.
Muhly Grass is hardy down to zone 6. In a container you will need to provide extra protection and even placing the container in a garage or shed would be best. The roots are vulnerable to freeze, so if they thaw and refreeze, the grasses can die off.
Most people leave the grass for winter interest and prune in the spring.
I certainly can see cutting the grass for use in dried arrangements.
https://www.gardeningknowhow.com/ornamental/foliage/muhly-grass/growing-muhly-grass.htm