I dont know if it would work in your zone but Crepuscule is gorgeous, blooms for me all the time, folliage is lovely. But it does not have fragrance. I am thinking you will have a problem with this if you insist on fragrance - dont know any climbers that have much scent. Blush Noisette has scent. If scent is first priority, maybe do search for roses with the most scent and plant them along the fence. I have a long fence with posts every 8' and I have planted climbers at every post with shrub roses in between and they are doing great. Roberta Bondar, a yellow, is really taking off. I also have Clair Matin, Mme. Alfred Carriere, Brite Eyes, Crepuscule, Orange Triumph, Blush Noisette, Darlow's Enigma [this has scent, tho blooms are small], Compassion, New Dawn. I have also used [and you could too - they are bred for your climate] lots of Buck roses. Dorcas is a beautiful bloomer! I have a couple of Austins - Lady of Megginch was new last year and bloomed constantly - huge deep pink blooms. Also like Cadenza, a red, Scepter d'Isle, Jeri Jennings, Outta The Blue. I plan to plant some clematis in with them in the spring. Since scent is important, you could pick some with outstanding scent, like Mr. Lincoln, etc. and intersperse these with your climbers. Good luck, you will have fun with this. Make sure the neighbor knows where the boundry is and that your fence is 1' back from it. If putting up a taller, solid fence is an option, you will solve the problem. I did this with neighbors who built a huge car shop - it destroyed my view and privacy so just built an 8'3" fence and problem is solved. Good fences make good neighbors! Judith

You can also tell by the leaves. Key limes have very small leaves -- maybe up to 1.5" across by 2" long max (usually smaller) with little or no petiole wing. 'Tahiti' limes have "average" leaves, maybe 3" long, with variable petiole wings, but at least some leaves should have a significant wing. Lemons have among the largest of all citrus leaves -- 4-5" long, with no petiole wing at all. Key limes also make little, "twiggy" new growth, whereas the other two put out much larger flushes, often several feet long.

Pretty difficult to tell apart. Blaumeise (aka Teller Blue, Blue Tit and Blue Sky) has larger inflorescences (9" across) and the ability to reverse itself as the flowers age - as illustrated by the inverted sterile sepals showing in your first photo. Both will be a very intense dark blue in proper soil conditions.

I LOVE PURPLE BUTTONS! I am getting giddy just thinking about its late springflush of bloom. PB and Midnight Blue are the Marie Pavies of the purple rose world. Perfectly sized for my inner city garden and absolutely joy-inspiring whenever I spot a cluster of blooms. In fact, Marie Pavie and PB look fanatic side by side. Breathtaking! All summer. Violette is one of my very favorite roses! (I think I'm repeating myself.) It is my top purple rambler. The color, when backlit, is breathtaking. I have been visiting mine daily. I can hardly wait for those little bud clusters to open.... Carol