Generally, smaller, lighter colored, fewer petaled flowers will perform better in less direct sun than larger, darker colored and more heavily petaled flowers. I know climate is totally different, but here I have Souv. de St. Anne's on the north side of the house where it gets strong reflected light with very little direct sun. It grows well, flowers heavily with the flowers progably lasting better than they would in hot sun. As expected here, whether in direct sun or not, it mildews terribly with a small amount of black spot. The foliage isn't a LOT rose than Malmaison's which is in more direct sun. FWIW. Kim

For me Monsieur Tillier and Lady Hillingdon didn't like full sun, and I've heard that Georgetown Tea has thin petals that don't like full sun. I had Mme. Charles in partial shade and she still bloomed very well.

Ingrid

All of the roses you list are Old Garden Tea and China roses, and Noisettes, and Polyantha all of which bloom normally in your latitude with 6 and 1/2 hours of full sunlight a day.
Or 4 hours of full sunlight plus 4 hours of lightly shaded sunlight, the hours to be counted for shade tolerance are between the hours of 8 a.m. and 4 pm.
If there are no trees or large shrubs, and the shade you mention is the side of a house, all your roses should bloom normally on any side of your house, even the north side because of your latitude.
When growing Tea and China, Noisette and Poly. own-root roses in some shade from band sized pots, I usually grow them in a larger pot in full sunlight until they are 2 and 1/2 feet tall or so and then transplant them, otherwise they are very slow to grow.

Lightly shaded sunlight must still be strong enough to cast a shadow from your hand when held 3 feet above the ground. If it doesn't, the hour counts as darkness for growing roses in shade, by my method of calculation.

I did a shade survey in a public rose garden to find which rose cultivars could stand some shade. Latitude counts, because the suns rays are stronger the closer ones' garden is to the equator, so you are lucky there.

The great thing about growing Old Garden Tea roses in light shade is that the lovely nuanced hues show better than in full sun.

Lux.

I have Louis Phillipe on the east side of my house that only gets morning sun and it does well. It still blooms in flushes that are fairly close together and I don't have any foliage issues with it. He only ended up on that side of my house because he is out of my zone, and that is the side of my house that is sheltered from winter winds....but it's worked out quite well!

~Tammy

I grow G. Nabonnand, Miss Atwood, Lady Hillingdon and most of my my other teas in limited sun with dappled shade. They all bloom well for me, but would perhaps bloom more in full sun. Since moving this far south, I have decided that most plants benefit from having some shade here.

Souv. de St. Anne's and Lady Hillingdon grow well here in the conditions you describe.

Colleen

I have just made a bed along the length of my house on the west side (5 to 4 hours of sun), and want to thank you all for your experience in partial shade. Thank you, Roseseek (Kim), for your info. about smaller and lighter petals can tolerate shade better. My Austin Wise Portia rose was blooming in 2 hours of sun last month. Its petals are thin and light, small, and simple.

Someone else reported their Crown Princess Margaretta rose was blooming in 2 hours of sun also (I didn't believe it, until I saw my Wise Portia doing the same).

At first I regret re-discovering roses too late, after I have already planted 26 trees in my yard. But I'm pretty happy with a partial shade rose garden. I'm happy with a few fragrant flowers to sniff, rather than a truck load to deadhead. The advantage of a partial shade garden is: 1) I don't have to water that often 2) Some roses smell better in cooler, shadier condition, like Wise Portia.

Garden Atlanta: Your sun is more intense than my weak colder zone 5a sun, and you would have better results with your partial shade garden. I was googling the experts' opinion on roses in partial shade, and they wrote that roses can tolerate partial shade better than lack of water.

gardenatlanta, from your list I only grow 'Georgetown Tea' (I have the Vintage Gardens clone). I planted mine in a spot which is shaded by palm fronds part of the day and it looks like the rose really seems to like it. As a matter of fact I think the delicate blooms would fry here in San Diego, inland, if they would be in full sun all day in the hottest times of the year.

Christina

I think you'll find the wives' tale that roses need "full sun" probably originated in Britain, along with the kind of pruning they need. Their climate has far less sun than most of the American and Mediterranean types, and the types of roses grown then and there were quite different from what many of us grow. Hybrid Perpetuals in that climate do require heavy pruning and lots of sun. Do that to modern roses and those which flower well without being hacked to death in our climates and our results are often far less than satisfactory.

The hard part is taking such 'rules' in their historical context. Victorian and Edwardian gardeners grew many roses we (thankfully) will never see as most of them were self seedlings of what has survived. Very many of them weren't as good as what we can obtain and in that climate, they required far more attention than they do in warmer, sunnier areas. The Old Rose Writers offered what they'd found worked best, and as with much cultural "requirements", they've been repeated and plagiarized for a century with little to no thought given to differing conditions and virtually no observation and actual experience involved. Thankfully, we have forums such as this and sources who have grown and studied the roses. What we consider "partial sun" is probably equal to a "shade garden" when viewed through Nineteenth Century eyes. Kim

Jeff, I've read that Country Dancer can take quite a bit of shade. I grow many of the roses on your list, but they're all in sun all day, even the ones that some have crisp in full sun. Mine don't. I do have one Louis Philippe that's pretty shaded in summer and Mrs B R Cant is in dead shade all summer. Both have started blooming real recently apparently because the sun has started to shift south and is getting under the trees. I'm going to move MBRC this winter. She deserves more sun, but she'll still have shade until early afternoon. (Hopefully, her Fortuniana rootstock won't mind the move.) Good to hear Souv de St Anne's can take some shade since she's the one giving up her place to MBRC.

Sherry

Here is a link that might be useful: If only sweat were irrigation...

The only rose on your list that I grow, is Mons Tiller, my Archduke Joseph.
I found his blooms burned badly in the sun here, so I moved him underneath an apricot tree, where he only gets some sun, for the last half hour of the day.
He still blooms just as much there, but without burning.
However I am in a mediterranean climate. I don't know how he would respond in yours.
Daisy