Looking for heat-tolerant roses--

bethsmomAugust 14, 2007

I'm looking for help from folks in hot dry climates (AZ etc) In this high desert some of my roses wilt, even with daily (sometimes 2x daily) watering. Most have very small blossoms, and even those open and droop within hours. Can you suggest roses that will tolerate our 100 degree days?


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dublinbay z6 (KS)

I don't know about your 100 degree heat, but in my KS 100+ degree heat, Crimson Bouquet is blooming like crazy--most blooms it has had all year. It seems to love that hot, hot sun. Perhaps the blooms are a bit smaller than usual, but they are still a nice size, and those red blooms really vibrate in the all-day sun.

Hope that helps. My other roses are burning badly around the edges in this heat.


    Bookmark   August 14, 2007 at 1:57PM
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jerijen(Zone 10)

In hot weather, almost every rose will produce much smaller blooms. Some will quit altogether.
In AZ and NV gardens I have visited, rosarians place shadecloth where it can protect roses from afternoon sun.


    Bookmark   August 14, 2007 at 3:44PM
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Hello Beth's mom,

I live in Las Vegas which is very hot and dry. So much so that we've lost quite a few "heat loving" roses. Ones we have had good success with might not be the bloom form you are looking for but a noisette that has not stopped blooming with great foliage even through our week of 115 degrees is Belle Vichysoise (sp?). It blooms in clusters of about twenty small pink roses and multiple clusters going on the bush. Also angels camp tea which is in brutal sun until 5:00 or so has not stopped blooming yet but it's flowers have definately gotten smaller. Luther Burbank's china Santa Rosa has been quite good but the flowers again are smaller. I've heard from several sources that Saint Patricks is a very good desert rose with more hybrid tea form but I haven't found it yet.

I figure roses are not desert plants and to expect them to perform 100 percent in June, July, and August just isn't reasonable unless they are under some kind of shade structure like a filmy tree or shade cloth that tempers our brutal sun. That's what we have Cordias, salvias, Agastaches, lantanas and other true desert lovers for. Also unless your roses are in pots watering twice a day or even daily sounds like too much to me because they need to be able to "breathe" at the roots.


    Bookmark   August 14, 2007 at 8:16PM
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I'm not high desert but we have months of hot dry heat. I have one rose to offer up unless you want to talk minis:)
I have this rose in full non stop sun, Angel Face. With all the negative talk about it I thought I would try it in the high heat of the valley to see how it would do. The edges don't turn, it might have a little fewer petals but the size of the rose is basically the same. I don't even have flushes any more, it's been non stop blooming since the 90's and the 100's hit. Temps been fluctuating from 100's down to low 90's and I didn't adjust the watering and the edges of the foliage crisped a little but the roses keep on blooming.
This is from this evening:

Don't judge my bush too harshly it's too hot to get out there and work on it, it's young and I just try to keep up with deadheading at this point.


    Bookmark   August 14, 2007 at 11:08PM
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jean_ar(z8 Ar)

The best roses I have that can handle this 100+ heat out in the boiling hot sun without burning up or wilting is St Patrick, mariyln Monroe,Glowing Peace,Dolly Parton,Lady Di and Belinda's Dream.All the rest of my roses burns to a crisp within a couple hrs after opening and blooms are real small.


    Bookmark   August 15, 2007 at 1:32AM
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Thanks to all for your info and advice. I will certainly be looking for Crimson Bouquet and Angel Face next bare root season(thanks too for the pictures) Will also check out St
Patrick and others that you mentioned. I understand that roses really aren't desert flowers, but gotta have 'em! Some that I have now doing fine are Topsy Turvy, Elle, Julia Childs, Hot Cocoa, all in pots. Also Gemini, Electric Blanket, Amber and Eden in the ground. It's a challenge in this hot area, but the rewards are worth it!

    Bookmark   August 16, 2007 at 9:32AM
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Not dry by any means, but it has been extraordinarily hot this summer. My top pics:
I agree with Leslie, Angel Face has been good
Julia Child
Our Lady of Guadalupe
Mary Magdeline (nothing slows her down, no thrip problems either)
Disneyland, a bs mess, but continues to bloom like crazy
Day Breaker, breaking records, can't count all of the blooms


    Bookmark   August 16, 2007 at 10:42AM
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I've been thinking this one over and the answer is 'none', if you're trying to find a rose that will tolerate the equivalent of a Phoenix summer (110 day of 100+ temps) and still put out quality blooms.

The roses that I particularly appreciate are Austins. The ones I have are blooming, have a scent and still look attractive. The same can't be said for the hybrid tea's and the OGR's went dormant two months ago. The Austins I have are Christopher Marlowe, Molineux, Golden Celebration and Fair Bianca in all-day (frying pan) sun. Tamora and Prospero are in semi-shade but they haven't attempted to bloom since June.

Minis are still going gang-busters. I've got some 70 of them and give a big thumbs up to Norwich Sweetheart and Autumn's Splendor for their endurance under heat. Both are still throwing exhibition quality blooms, which actually last through most of one full day.

My Angel Face only lasted six years and what few blooms it put out in summer were tiny, pink and 4-petaled... typical of roses in our heat-index.

For best results, erecting a shade structure to protect the roses from the afternoon sun helps considerably with bloom and leaf beauty. Keeps the petals from frying plus cuts down drastically on temperature and transpiration. A good organic mulch, deep watering 3-4 times a week and withholding any fast-acting nitrogen will keep the bushes healthy through the summer. By the end of August, Phoenix rosarians will start adding a little organic rose food and some iron to the soil. We do a light pruning in September and then it's the fall rose shows in November.

    Bookmark   August 16, 2007 at 6:41PM
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tenor_peggy(10 FL, N. Fort Myers)

Old teas and chinas are blooming in my garden in this Florida heat, but the flowers are small. I do not spray them with fungicides and so far no spots! :-)

    Bookmark   August 16, 2007 at 7:04PM
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diane_nj 6b/7a

I've got to second Nancy on Our Lady of Guadaloupe, it is one of two roses (the other is Pope John Paul II) that has not stopped blooming all season, including the past 4 weeks. It just finished another flush (#3). PJPII has been plagued with thrips, but OLoG has just kept going, and I have to look, I think it has more buds. And has stayed pretty clean disease wise, even though I've been slacking off on spraying this year.

    Bookmark   August 16, 2007 at 7:36PM
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Maryl zone 7a

Oklahoma is not known for mild summers (anyone see the last PGA tourny?), but ours is not a dry heat. Still I don't know if that makes a difference when it's over 100 for days on end. Anyway, these two spring to mind as doing particularly well in the heat: Honey Bouquet (Floribunda) and Tinke (HT).
Honey Bouquet:


    Bookmark   August 16, 2007 at 7:49PM
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Thanks again for the advice and pictures of heat tolerant roses----also the info from moroseaz in Phoenix, and Maria in Las Vegas. If you can grow roses in those hot places, I'm impressed! This is my first summer growing roses in the high desert and although I formerly did well in the hot Sacramento area, it's even more difficult here. You have opened my eyes about watering ---I have wondered why my roses in pots ALL did better than any of the roses in the ground ---better drainage of course! All of my roses have at lease 3-4 " of gravel/rock in the bottom of the holes, but the pots drain better. Our soil here is DG on top of granite, so it is almost as if they are all in pots. But I guess the ones in the ground drain more slowly. Anyway, thanks for the help and I'll be using the AZ schedule for light pruning and fertilizing in Sept.(Will be checking out minis too!)
Beth's mom

    Bookmark   August 19, 2007 at 2:15PM
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Colette....newly planted from RU in May left alone without water from sprinkler for 5 weeks is healthy bush with once/week watering in 100+ I am very impressed with it. Mrs. B.R. Cant has healthy foliage and is blooming.

    Bookmark   August 19, 2007 at 8:05PM
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This area is usually not dry (coastal southeast) but we have drought in the last two years and this second year is very bad indeed.
Hybrid Musk Felicia blooms continuously in full sun and may loose leaves but not flowers.
Elina keeps blooming though the flowers are smaller than they should be. WS2000 is blooming but it is positively pink not even close to red. In the same bed in full sun Lavaglut has a lot of very dark flowers.

Paradise is one that loves heat and blooms better in hot weather though it is always a good bloomer.

OLOG and Summer Snow are always in bloom. Belinda's dream has very good foliage but blooms rot in high humidity - doubt that it is an issue you would be troubled with. Bewitched does extremely well in an area where we do not even have soakers and usually is forgotten when we water.

    Bookmark   August 20, 2007 at 11:05AM
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Don Juan keeps reblooming...they are the usual size too...the color is slightly lighter but still dark red.

    Bookmark   August 20, 2007 at 11:21AM
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DAME DE COUER blooms well here in Texas in the heat. The deep red blooms last quite long even when it hits 100. Two others that do well for me are the pink roses 'BELINDA'S DREAM,' and 'MARIE DALY.'

    Bookmark   August 20, 2007 at 1:46PM
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Though New Orleans doesn't qualify as dry, we haven't had rain in weeks. I haven't watered in months(forget 2/day), I've never sprayed, and my Ruby Vigorosa keeps throwing out blooms. They're the same size, but they do bleach in the sun. It does provide a nice effect because the newer roses are very dark pink, and then as they age (and experience the 100 degree heat) they bleach to paler forms of pink so each cluster of roses has blooms a variety of shades. And the bushes are covered in blooms.

My Duchers were doing real well, but this last week they haven't had any blooms, but maybe that's because it took me awhile to deadhead about 30+ blooms off each one they had produced in the previous week. But the blooms have also been smaller.

    Bookmark   August 24, 2007 at 6:45PM
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