Gardeners in hot & dry climates, please share your heat tolerant roses
KJ (9B, San Jose CA)
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KJ (9B, San Jose CA)
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Calling all AZ, Central CA, Hot, Dry climate gardeners
Comments (21)Tessiess, thank you for your input. I used alfalfa pellets for the first time this spring, and upon closer observation, I have not noticed any major differences that I can definitely attribute to its use; unfortunately I continued to use my normal March cocktail which could account for a lot of what I saw in terms of growth etc. I research, research, research and many experts warn against the use of alfalfa as it is believed to raise the pH, which is the opposite of what I want for my high alkaline soil. Years ago, I attempted to grow Blanc Double de Coubert. I had just began rose gardening and I am sure its demise is gardener error. I am happy to learn that you have had luck with rugosas; with very little intervention, which is probably key to its success? Now if I can just find someone who has had success with Paul Neyron to discover what the issue is with as so many gardeners seem to despise it.... Lyn, you are so correct. Las Vegas has its name because it means the meadows. This land was once very fertile and wet. Generally, the soil in Las Vegas has inorganic minerals, but is very low in organic compounds . We aspire to have soil that is 5% organic compounds but have to amend a lot to get there. We also amend the soil to lower the pH....See MoreRoses that have performed well in my hot dry climate
Comments (28)fragrancenutter, beautiful bouquet!! I especially like your Memorial Day and Barbara Streisand. If you, and others who grow roses where summers are hot like lavender roses, here's Love Song. I wouldn't care if my roses stopped blooming during the summer; who could blame them, but some just keep blooming when it is really hot. This bloom of Lovesong opened Friday. Yesterday it was 111 degrees F ( the hottest day of the year thus far). This photo was taken this morning. It is not the best bloom for this rose, but under the circumstances..... This is a grafted rose that was in a pot, then planted about a month ago... Love Song ( same plant) when it was not so hot, and established in its pot. Neptune is new for me this year... its blooms are looking gray right now.... Angel Face has about two dozen blooms right now that are smaller, but hold their color. ( I would take a photo, but most of the roses on the plant should have been deadheaded 5 days ago). Lynn...See MoreOther dry heat tolerant old roses?
Comments (36)Mrs. B. R. Cant and Le Vesuve are more of the old roses with sky-high heat resistance. As young plants, they maintained healthy foliage after a sudden 116 F/47 C day, other than a couple of leaves, about the same performance as your Mr. T. This is 17 miles/28 kilometers east of Los Angeles, more interior/hot/dry than L. A. They both get mildew, Le Vesuve less so. While I don't recommend it for this, the now-matured Mrs B. R. Cant is surviving in a 'waterless' (no water once-established) garden. Unfortunately Le Vesuve has died off. It's a testament MBRC's hardiness that it is leafing out like normal after the first soaking rain in 9 months. It defoliates during the summer drought. However, in spite of surviving, I believe the conditions are probably too harsh for it, as it shows major sunscald on the canes. Other old roses--Marie van Houtte is more heat sensitive as a young plant than the 2 above, showing more tissue damage; has not yet been tested under waterless conditions. Old Blush does quite well under waterless conditions, better than MBRC, but was never directly tested by very high heat as a young plant. OB defoliates completely to leave an attractive silhouette of branches but unfortunately gets mildew. Madame Alfred Carriere might be hardy under waterless conditions (need to test longer) but was not tested as young plants under very high heat. It does sunscald on the canes but because it sends up healthy new canes more easily than MBRC I rate it as more resilient, provided it continues to do well under waterless conditions. Gets some mildew under my conditions. Old Blush, after 8 months of complete drought:...See MoreWhich rose bushes flourish in hot, dry climates?
Comments (9)Roses can thrive in the desert, however placement, variety, drip irrigation and mulch are key. Contacting your local rose society or even visiting their website could be helpful. I do not know if your roses are growing in the ground or in pots, but potted roses in hot climates can be very challenging and often require the most attention. As Diane mentioned, drip systems are necessary and most homes built after 1990 should have come standard with a system, however, having a battery back-up is important. Over the course of 15+ years, I gardened in Las Vegas and lost fewer than 10 roses to the Summer heat...and more than half of those were due to drip system failure.. so there is definitely cause to be optimistic. In addition, fungal diseases are often virtually non-existent... Off the top of my head, my most heat tolerant roses: South Africa Blush Noisette Darlow's Enigma Madame Joseph Schwartz La Reine Grandmother's Hat Iceberg ( was planted in mass at Town Square) Little White Pet Portland from Glendora Dee-lish Hume's Blush Tea Maman Cochet Mrs. B.R. Cant Le Vesuve Bolero Grande Dame Pink Peace Don Juan Gemini Joseph's Coat It was rare that I found a rose that did not thrive given afternoon shade... again (regular drip irrigation and mulch is key)... Hopefully Mojave Maria or Debbym (gardener in Phoenix... which is hotter than Las Vegas, but not as dry) will see this thread and add to it......See MoreSheila z8a Rogue Valley OR
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BenT (NorCal 9B Sunset 14)