I have a climbing rose. Well, I think it's a climbing rose. I got it from Publisher's Clearing House and sometimes what I ordered from them isn't what they sent. That's all I'll say about that. But the rose is now about 3 years old and blooms beautifully and I have it in a barrel with a tomato cage over it. It's not very tall but that might have something to do with the fact that last year the deer ate it down three times and this year the deer ate it down twice before I finally wised up and got a fence put in. I have an arbor with two wrought iron "boxes" on either side. I think you're meant to put a pot inside the box, but me being me, I decided to put ground cloth around the insides of the "boxes"(to keep the dirt in), held in place by clothespins, and then I filled the "boxes" with potting soil. I have already transplanted a grapevine into one side. What I'm wondering is if I put the climbing rose on the other side, will the two coexist when they meet on top? I was thinking the grapevine could just curl around the rose branches. I tell you, I don't do anything normal when it comes to my poor plants.
I think if the rose has thorns that you might regret doing that in the long run. It would also make it a bit difficult to prune your grape vine as you'll need to do to get a good harvest.
If you want decent grapes you do. You also have to remove some grapes from each bunch and remove bunches that are too close together otherwise you get grapes the size of peas and grapes that rot from being too close together and stay wet from lack of air circulation. Grapes are not a no fuss fruit.
You'll get grapes if you do your due diligence . I don't grow them because I don't eat grapes enough to bother growing them. I would rather grow blueberries and blackberries, they're not complicated to grow.
I've only planted one grapevine before and it was years ago when I was in California. It took three years, but the year I moved, naturally, there was a bunch of grapes on that vine. What's funny is I thought it would be easier to grow grapes than blueberries. I have three blueberry plants in containers and I think one has a single blueberry on it. I've had that plant for two years now, but the other ones are new as of this year. And they're all three different varieties. So there's that. We have invasive blackberries up here that are just terrible to get rid of but they have the best blackberries ever. So at this time of the year, I find them growing by the side of the road pick those.
As long as your soil is acid and the blueberries get at least 8 hours of sunlight, blueberries are easy. Once they are in the ground and have a year or two to get their roots down deep the blueberries come along abundantly. I fertilize mine only in early spring with acid fertilizer and only water if it hasn't rained in two weeks. Of course, when you first put them in the ground you must make sure they get a good deep soak weekly. You do that for the first year.