My wife loves roses. She is growing two plants for their flowers, especially their scent, in containers on the south side of our house in an especially warm microclimate. Roses are marginal here. She’s been putting the roses in the garage on especially cold nights for the last month. Older rose varieties, like Rugosa roses and wild rose species, handle our cold spring nights at 7,000 feet better; some have large rose hips (rose fruits) that make excellent tea and can be preserved for jelly/jam.