At least here, you'll probably need something larger than an umbrella trellis. I have two - second season Don Juans - the canes are in the 8'-10' range.

I was thinking of doing the same thing. LOL I was going to get the largest one (85 inches). The rose would need to be at least 8 feet to cover it and then could be trained horizontally.

Anyone else have input? I want to know if this will work.

The one thing I have heard is that DJ is a slow grower. opinions?

To cover the tallest umbrella trellis you do need a climber that grows to 10'-12' minimum. I do not grow Don Juan but I saw a few around. I don't see that you would run into much problem with DJ on a Monet trellis. If Don Juan will or must grow to 20' then it could be a problem for the umbrella trellis.

I think either one you could make work. My don juan tends to stay straight up though, so the pillar might work better.

Thanks everyone.

I think I'm going to go with the tall Pillar if it grows straight up.

I Have 2 Don Juans how about a tall obelisk

Canes are a bit stiff, might be an issue with an umbrella trellis.

Labrea - I think the obelisk is a good idea, especially sincse as Jody said the canes are stiff, may be a problem for the umbrella.

Thanks Jody and Labrea.

The roses usually grow on 7 to 10 inch stems off the canes as seen in the below picture some stems have been as long as 12 inches.
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