Mine is new from last spring so somewhat limited also. So far I just love it though and it appears to be vigorous and healthy. One of the strongest to overwinter of the roses out front. Good rebloom definitely. We don't have really high temps so cannot speak to that. Good fragrance. I would buy this rose again certainly. Kate

I have a new plant of it and am smitten too. Beautiful colour. Before the first flush finished it was putting out an amazing amount of new growth...at every single leaf axil. It will be putting on an incredible show in a few weeks.

Currently I am only growing LEH on your list. I have had Fragrant Cloud in the past. Both Lady Emma Hamilton and Fragrant Cloud are very fragrant. The only real problem I had with Fragrant Cloud is that it was hard to winter over. For me, it didn't seem to like winters whereever I was at the time. I cannot speak for Lemon Zest. Maybe someone else can. My Lady Emma has been in a pot this year and has bloomed fairly steadily. She is a delightful color with a nice smell. All three of your varieties that you are considering would go good together if they bloom at the same time.

I have all of the Austin oranges - Pat Austin, Lady Emma Hamilton, Summer Song, Lady of Shalott, and also Carding Mill. My Pat Austin has shown rose rosette disease, but is responding favorably to aspirin treatments at the moment. I'm hoping for the best on this. It does bloom nicely, but the flowers do not take our summer heat. The bush gets quite tall. It does have a good color, but, again, the flowers fry easily. Lady Emma Hamilton does not get to be a tall bush. It is more spreading. It does not bloom in large amounts of flowers at any given time, but it has a fairly steady supply of nicely fragrant flowers. It is the most consistent performer of the oranges that I have. Summer Song was quite pretty in the spring. For summer all three bushes of it that I have didn't do much of anything. I noticed that a couple of them were munched on probably by deer. Something ate the leaves off of them as well as part of the stems, and I have seen deer in the yard at various points. The first year I had these plants they did reasonably well. This past summer, year two, they didn't care for the excessive heat and just sulked. They did, however, throw long canes. The orange color does fade badly in the heat. They did not bloom much at all in the fall either. I think it was more because of the weather. Lady of Shalott was pretty its first year. It seemed to be going along okay growing and flowering most of the way through the growing season. It pretty well stopped by the end of September, but it had a couple of flowers late. I think this bush will get fairly large. Flower size has been on the small size. Perhaps it will improve some next year. Carding Mill does reasonably well, but the flowers have been on the small side. It can get to be about 5-6 feet tall here. Its growth habit is fairly cylindrical and doesn't spread much. The apricot color bleaches out to a pink in the heat. Otherwise, overall it has been reasonably consistent here. I have no major complaints about this one. I hope this helps a bit.