Question
One last question...in the spring it will shoot up one cane that is about 6 feet long.  How much of the tip should I cut off?  Thanks for all your help.  Donna
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Sorry, I forgot to mention that I live in Western NY.  It's zone 5. The main question is why only one cane? I have many roses and they all are very bushy.  Also it is growing on a fence, so the lonley cane is horizontal
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Hi,
I have the the above mentioned rose for about 4 yrs now.  the first yr it grew 5' long canes with several very large beautiful roses.  The past few yrs, it grows one 6-7' cane and no roses.  What should I do?  It gets about 6 hours of sun a day and I water it regularly and feed it twice a season with blooms plus.  thanks, Donna
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The fragrant, vivid pink "American Beauty CL" is unusual in that it is not a "sport" of "American Beauty", a Hybrid Perpetual introduced in 1909, but an actual hybrid blessed with long, arching canes.  Bred in France, the blooms are similar, but not identical.  This one will reach 15 feet or higher at maturity, drenched with large, dazzling globes.

So what could be wrong with the specimen in your garden?

For starters, the basic rule about Roses and Full Sun still applies - although this is one of those Roses that is less greedy than most when it comes to sunlight.  If you want your Rose to do its best, give it the most light you can.  In a world where the sun is shining at least 12 hours a day, 6 hours is not that much.  If there is any way to improve on that, you'll get better results.

But your Rose bloomed satisfactorily on 6 hours for one season.  Then it sulked.  Why?

Climbing Roses generate more blooms when the canes are positioned horizontally.  You'll notice that your Climbers will only bloom once at the tip of their branches if you arrange them on, say, a vertical trellis or Rose pillar.  Horizontal branches, on the other hand, form long lateral stems that bloom in clusters and provide the dazzling summer show they are so famous for.

Watch out for pruning mistakes, too.  Never prune until after the June, or else you抎 be pruning off your potential blooms. When flowering is finished, you can prune back lateral branches to 5-15 inches.  Your Climbers should not be pruned at all until they are at least 3 years old.

Finally, since you did not provide a location from which you are writing/and or growing your Roses, I can only wonder whether you are in a climate chilly enough to damage canes on this shrub and obliterate all flowering plant tissue left after the cold winter.  Mulch to protect tender plant tissue from winter harm.  And let me know if you need instructions.

Keep me posted.

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Sounds like you are doing everything right.  I hesitate to use the word "cut" at this time of year because I fear the reader will just up and run outside with the scissors and cut off chunks of leaves and branches.  That said, please wait until next spring, then cut off the end of the single long cane, thereby triggering hormones that grow brenches from the side of the plant.

In spring, when you begin fertilizing, take a good look at your fertilizer.  Pay attention to the middle number on the container.  That's the "Phosphorous" rating.  Roses also need lots of "Nitrogen" - more than most other flowering shrubs - because of the huge amounts of energy needed to create one Rose.  Hope this clears up any questions.  If you have any others, relay at thos places&!

Answer
As I said earlier, see how your shrub responds to a 3-inch trim of the cane.  And as I also said... DO NOT DO THIS AT HOME - not at least until spring.... PLEASE!

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Without seeing your Rose here I can only take an educated guess - but this is not so critical that you really have to worry over it.  See how a 3-inch trim does.  This is similar to the effect of "pinching" potted plants and perennials to stimulate branching.  Removing growth hormones from the tip of these canes/stalks causes the plant to produce even more at the ends of the remaining terminals.  Result: Growth spurts.

As for the single cane growth habit, that's what defines this particular specimen as a "climber".  Roses are not actual "climbers" in the botanical sense - they're missing all the necessary equipment to really call them "climbers", i.e., tendrils, or other features, that allow them to hold onto walls and tree trunks while growing upwards.  The reaching arc of your Rose is just its growth habit.  With time it will be covered in Roses and you won't notice the single cane.  But PLEASE, don't prune anything now.  Keep the pruning shears in the garage and enjoy the snow.