If you like a good, nonfading yellow for Arizona heat I can totally recommend MELLOW YELLOW. It didn't have a lot of fragrance for me in the blast furnace area that I planted it in. Sure loved the heat!! And it always came through our winters with flying colors. No diseases at all, but then my garden is semi-arid. That's all that I recall on growing this one. Sorry I don't have any experience in growing Summer Love, Happy Go Lucky, or Sparkle & Shine. :) This post was edited by dove_song on Thu, Mar 20, 14 at 19:09

Michael, I think the smaller bushes might be almost 1 1/2" wide. One I believe is a Gemini (beautiful peachy pink with some salmon color in it). It did beautiful for years, last year it looked dead. I was told to dig it out. I waited. It was one of my most beautiful bushes. Glad I waited. This year--told to dig it out. Now in the last week--I see some growth on the bottom. I will wait. The other bushes that are smaller width wise--I don't even know what they are. One is orange with a yellowy center. When it fades out, it almost turns a cantaloupe color. A friend bought it for me, so I don't know the name. The other smaller bushes were there when we bought the house--(red), don't know what they are. The orange ones grow about 2 feet tall, red ones grow 3-4 feet tall. The blank space that is noticeable is between the smaller red &orange bush because they never seem to get any wider to fill in the space. Years ago, I tried two lavender bushes---gorgeous and very healthy for as long as they lived. Yet, they only lived about 4 years, so I gave up on the lavender even though they were gorgeous to look at, healthy while they lived & held up in a vase for a long time. That's why I'm tempted.....but if they are not good (even the yellow) in Zone 5--I need to stick with what is excellent in Zone 5. I think I will dig out the David Austin Othello. Half the bush is dead cane with thorns big enough to take a hand off, the other half is a lot of foliage. That bush I've been tempted over the years to dig it out, but I have this "thing" about killing living things; yet it blooms maybe 5 roses once or twice all season. Someone talked me into this one..... Arghhhh? Sad to say, but this is the one I did not protect with a collar this winter. I just threw some mulch around it. First off, a collar would not fit & ran out of collars. Hoped it would succumb to the weather.

The heat-loving yellow HT that immediately comes to mind is 'St. Patrick', although it is not an intensely saturated yellow. It is a great one for the vase, though, with lovely form. It holds up better to heat than any other rose in my yard. Strong cutting stems. If you can accept a full ogr type of flower, and can find it, 'Toulouse-Lautrec' has an absolutely pure right-out-of-the-paint-tube chrome-yellow color. 'Mellow Yellow', I've not grown it, but have had my eye on it for a while, waiting for a spot to open up, nice yellow color, full ht form. 'Lemon Spice', simply for the fragrance. Form is not all that great, and color is rather pale, but the fragrance is excellent.

Really pretty. I think that's the only color climber I don't have - I better get one ! Carol