I'm originally from michigan and I know they reseed there. If you want to try it, I would pick a cheapo rose that you won't be heartbroken if it gets killed. MG's twine so agressively that I would think they would take over a rose even in a cooler climate.

Well, I have to agree with the other naysayers - morning glories can be very vigorous and not a good choice growing up a rose. A clematis vine, other the other hand, would be a wonderful choice. :)

I have found the Z4 season to be a bit too short for 'Heavenly Blue',
but, that was my experience...
Like mxk3 suggested, clematis are very beautiful with roses.

OK, you guys have convinced me;-) I used to grow morning glories on a lattice fence and never had any reseeding. But I will take your advice and save myself some potential trouble and stick with clematis on my roses. Thanks everyone for responding.

Even if it doesn't reseed it sure won't do that rose any good!...Ever hear of black spot and other fungi caused by not enough air circulation? Ever hear of pruning a rose to open up the middle?
My neighbor grew a clematis on an arborvitae for a number of years.....giant PIA....had to untwine it every spring and cut the dead off.....
Buy a tauteur...it won't get fungus.
Linda C

and not to beat a dead horse, but if morning glories get too much nutrients, they will not bloom. the amount of fertilizer a rose gets will certainly cause a morning glory to just be a totally green vine.

i second the clematis suggestion. tons of colors to choose from and both have the same nutritional requirements.

I'd like to butt in and say, just make sure you do not get a vigorous growing clematis. Some clematis grow so much in a single year, that your rose would virtually disappear.

I grow MG's up my climbing roses and have for years and it is beautiful. the mg's freeze in winter and the roses are healthy. no problems here.

think about it this way ...

roses are full sun ... 8 to 12 hours per day ... by the time the MG is done .. your rose will be in full shade ... underneath it ... and i think that will answer all your questions .... just like what everyone else said ...

also .. i think you will have to start witha rose that is pest and disease resistant ... becasue you wont be able to spray a picky rose if it is cover with something ....

and .. you dont live in S CA .... lol

ken

You likely don't have the black spot and other fungus problems that there are in Rockford Illinois.
Linda C

I had a morning glory vine kind of take over my "carefree delight" rose last summer while we were out of town. It looked really pretty, though, I was afraid the rose would suffer. The rose bush did fine and bloomed like crazy. MY problem was come winter when the vine turned brown and I had to pull it out from the rose..Then I did not think it was so pretty!! Lots of scrapes from the thorns...

I live in zone 5 and I grew morning glory on lilies. They
reseeded and started twining up the lily stems. I loved it because they the time it started flowering the lilies were already finished blooming and it covered the stalk. Didn't hurt my lilies because they are back again.

regarding re-seeding- I live in Zone 6, and have grown MG's for 3 years. I was always baffled by people calling them invasive, cuz I never had any re-seed. Maybe it takes a couple of years, or this was a good year, but this year they have re-seeded like crazy!

ellen

Hey Ksg, what would be a good variety of Clematis that is very vigorous....I have two that pretty much just put put along.

I'm in Zone 5 and had a LOT of reseeding. However, I think it depends on what variety you plant -- some reseeded better than others for me.

As for being "invasive", they're not actually perennial in this zone, and the babies from the reseeding are very easy to identify and pull up the next year. Or just wait another week and the danged rabbits will take care of it for you -- I think my MGs had a sign that said "all you can eat buffet" this year. ;o)

You could grow some blue morning glories with a giant sunflower. The sunflower is hardy enough to not be strangled and the blue looks great with the yellow.