I think that the MN tip method is a lot of work for us, plus I could just as easily grow a rose that's zone hardy- yes it means I have to stick to winter hardy types- species types work great for us. I have own root Rosa glauca, and rosa foetida bicolor on its own roots- true they don't bloom continue but at least I'm not giving staff a heart attack when I rip up the roses and cover them.
I can just imagine what they'd do if I tried that with the houses roses.... lol.
I recommend high country roses they are really cool. great biz too.
