Hi, My first thought would be to go ahead and donate some money to the vatican and try to find a rose more appropriate to zone 3."USDA zone 6b through 9b .","Ten percent of the net proceeds from the sale of each rose will be put at the disposal of Vatican City, which has informed Jackson & Perkins that it will donate these funds to a charity benefiting the poor of Sub-Saharan Africa."both quotes from hmf. However if you really want this rose you could always plant it and see if it has what it takes to come back year after year from it's roots or find a way to protect it through the winter. I know this doesn't answer all your questions but I doubt it would help to be grafted to a cold hardy rootstock. I am really only interested in own root plants anyway and am far,far,far from an expert on the subject hybrid teas. I'm sure you'll get some more discussion here.
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Here is a link that might be useful: Help Me Find

Own root roses will be hardier than grafted. I've had PJP2 in both grafted and own root. The main difference is that the own root rose will take longer to establish and reach maturity. In Zone 3, I would take my chances with an own root rose. If it dies to the ground over the winter, there is a good chance it will send up new canes and grow back. It's a beautiful rose and I would risk it if I were you. BTW J&P has been introducing a lot HTs on their own root over the past few years.

dollsandroses
Thanks for the reply. We get very heavy and deep snowfalls here and I think they provide some protection against our -25 degree winter weather. Our snow cover lasts from November till April. I have faith I can grew Hybrid Teas since they do so well at the Montreal Botanical Gardens which is just north of us. Wish me luck.

Good luck!

Yes it's a beautiful rose. And your deep snow cover will insulate it from the worst of the cold. Own-root simply means that if it dies back to the roots, it can resprout as the same rose. When grafted roses die back to the roots, the resprouts are from the rootstock rose, not the rose you wanted and paid good money for.

No effect on disease resistance, except grafted roses can be more resistant to soil-borne problems like nematodes, depending on what rootstock is used. Fruit-tree propagators have a plethora of rootstocks to choose from when grafting, each rootstock with its own portfolio of disease resistant qualities, and effects on the eventual height of the topgrowth and its rate of maturity (time to bearing fruit). Not so much variety in rose rootstocks, but some. Nothing to do with things like blackspot resistance unfortunately. Wouldn't that be nice??

georgefromvt,
The Montreal BC has success because they work very hard to get their modern rose beds through winter.
You need to so some searching on the menthods the Montreal Botanical Garden uses on their modern rose beds. They don't rely on snow cover, but cut the modern roses back in fall and then put rather elegant, fit to each bed, insulating covers over them.

Here is a link that might be useful: A page with some photos from MBG

anntn6b
Thanks for the info. I've been to the Montreal Botanical Gardens many times including the winter and never saw any cover but obviously missed seeing it under 2-3 feet of snow/ice. I'm obviously will need to put a lot more thought and effort into trying to grow Hybrid Teas! Thanks!!!!!! PS if you ever in the area, check out the Montreal Botanical Gardens. Beautiful any time of the year! The greenhouses have just been redone!!

In the future, most (if not all) of the roses from J&P and Weeks will be grown on their own roots.

If you want to hold out for budded plants, you can still find them among the roses grown on
old virused rootstock by some growers.

Jeri

Old virused rootstock? Is that the reason J&P are going to own root roses? I would much rather have a own root rose, not have to worry about the bud freezing or offshoots from the rootstock. Any other reasons J&P is going own root?

If you bury the bud union, you won't have to worry about the bud union freezing or understock suckers, but you will have a rose that might actually grow.

J&P is going to ownroot roses because they don't want to pay the budders.

Honestly! How do own root roses compare to budded roses?

"I always thought Hybrid Teas are grafted?"
Own Root roses can be bare root. The term refers to the state the rose is in when sold, not the way the bush is propagated. By removing the soil from an own root rose you make it a bare root.
Until producing grafted roses became so expensive, they were the only type grown by the bigger growers. Over the years, common reference to the way a rose is sold has led to the term "bare root" becoming synonymous with grafted roses.
Like other varieties, a hybrid tea can be sold bare root as a rooted cutting or a grafted (budded) bush.
Because a bare root bush is usually larger than an own root of the same age, a grafted bush will produce more blooms quicker. After a year or two of being planted both will reach the same size and bloom the same.
Own root roses can be custom propagated and sold as a band within a couple of months of being started while a grafted rose requires two years before it's ready to be sold.
Own roots are being offered by more growers as their labor costs increase due to the crack down on illegal aliens.
Grafting is very labor intensive and requires great skill while rooting cuttings is easier and doesn't need a lot of training.
A grafted rose requires lots of acreage and expensive machinery to grow the bushes and depends greatly on the weather.
Rooted cuttings can be started and grown in greenhouses all year long. They can be grown and shipped in the same pots.
It's all about money and the bottom line, not any desire to meet the demands of the public.

The children of the old budders grew up and went to college.
They became attorneys and doctors and teachers.

No one in his right mind wants to work on his or her knees for hours, budding.

Jeri

It has been my experience in the short time that I have been growing roses that there is very little difference between grafted and ownroot roses. My favorite vendor grafts but my second favorite is ownroot. The ownroot roses start out smaller but they catch up by the end of the year. To get a grafted rose to survive in a cold zone you have to bury the bud union about 4 inches deep. Because several inches are buried it can go own root on its own. I don't worry anymore about grafted vs. ownroot and buy the rose I want from the vendors I like.