Question: I have some rose slips that have been rooting for 5 months. While there is still snow on the ground, it has warmed up here a LOT. The cuttings have been in an unheated sun room, occasionally subject to sub-freezing temperatures over the winter. While we are still getting frosts regularly, and will be until mid-April, I am curious if it would be safe to plant them in their permanent home yet.
The soil is still very cool, frozen in places, hence my question.
Resist! Check your Zone and it will tell you when it’s safe to add roses, etc.
Those roots are going to need WARMTH to make a good, solid root system for your roses. I wouldn’t risk it.
I’m in Zone 5a and I never add roses (bare root) until well into mid-May when my chances of frost/freeze have passed.
https://planthardiness.ars.usda.gov/