Dwarf Fountain Grass
Please help as I am a novice gardner.
I would like to use Dwarf fountain grasses (pennisetum alopecuroides Hameln) in containers on my front porch and deck area. I'm in zone 6 Eastern Indiana. I have read on several sites that the grass is hardy in zones 4-9. However this plant at my local Lowe's id card says cold hardiness zone 6. It does not list a range of zones just says cold hardiness zone 6. I would like to leave these plants during the winter outside in the containers. The plants are 1 gallon each and I would have a time trying to get them in the ground. I would like to leave them in containers to use next season. My concern is wheather they will survive in containers outside during the winter. They are about 18 dollars/1 gallon and I plan to buy 4 of them, so I dont want them to be lost like an annual. If leaving them outside is not a good option, will moving them to my garage be ok?