No spray report of problem roses
sammy zone 7 Tulsa
14 years ago
Featured Answer
Sort by:Oldest
Comments (25)
donnaz5
14 years agolast modified: 9 years agojerijen
14 years agolast modified: 9 years agoRelated Discussions
no spray report for a garden in north alabama
Comments (22)It is still June, so not so bad, it is going to be much worse later. From the list of repeat blooming roses that I don't spray these are the winners so far. Knock out - healthy Darlow's Enigma - healthy Home Run -healthy Puerto Rico -15 % leaf loss Ducher -15% leaf loss Arethusa -10 % leaf loss Earth Song -15% leaf loss Quitness - 10% leaf loss New Dawn - less then 10% Awakening -less then 10% Lyda -20% Belinda's Dream -30% Perle d'Or -30% Cecille Brunner -30% Marie Pavie- 40% Illusion -10% Quadra - 5-10% White Cup- 15% Carefree Sunshine -less then 10% In my sister's no spray garden close to me Dublin Bay- 10% Dortmund -10-15% Knock out -healthy Colette -30% McCartney Rose - 20% I also have plenty of healthy once bloomers and species that I never spray, too many to list now. If anybody interested, I can always share with them. I do spray my Austins, Bourbons and moderns. They would be 100% bald by now w/o spray. I see it in my sisters organic garden. Good culture, plenty of sun and defoliated roses :( I am trying to get rid of roses that require spraying, but it is so difficult to part with some of them (Lady Hillingdon, Yolande de Aragon, Deuil de Dr Reynaud, Abraham Darby, etc). They all are huge and beautiful. I am givivng away more and more of these to good homes. Olga...See MoreMy no spray report on chinas, hybrid musks and bourbons
Comments (33)One thing I have noticed is that not all Teas are created equal. While Duchesse de Brabant (who is now in rose heaven) not only quit blooming but lost two thirds of its canes in the heat, Souvenir d'un Ami has beautiful full-sized buds and blooms and even another younger band of the same rose now has buds on it. It would make sense that roses with fuller, thicker petals would do better in the heat. But then how to explain Souvenir de Germain de St. Pierre (hope I got that right), a rather young band that has semidouble fragile blooms, has already bloomed once and has buds on it now? And this is a rose that gets only hot afternoon sun! I think I'm just going to stop trying to figure things out and enjoy the idiosyncracies of my roses and let them do their thing. It would be too boring if they were all alike anyway. Might as well have a square plot of hybrid teas and call it a garden. Eek! Ingrid...See MoreMy no spray report of teas and noisettes
Comments (23)Sammy, Bermuda's Anna Olivier was not very bothered (if at all) by thrips this year (new in March in my garden.) I really like her. No BS problem so far and a big bloomer & big grower. I just posted pics on Ingrid's "Spectacular Specimen" query. I'm really liking this "light colored" rose. I posted about the roses on your list that I grow when this post was on the Roses Forum, so I won't do it again. Mme Antoine Marie is doing pretty well here. I like her symmetrical round growth habit. Her flowers nod quite a bit and don't last very long at this point (2nd year) but all in all I'm pleased. I wonder why yours died. My Mrs Dudley Cross is quite ugly, especially her flowers, and everybody else raves about her. I'm taking stock, too, of my 2nd year roses. Blumenschmidt (1st year) is doing quite well. She has had vegetative centers (not bad just green eyes) all along and blooms a lot for such a young bush, doesn't seem to get BS much & the thrips weren't as bad a problem as on DdB which was totally infested this year and last year. I wonder if I should keep her since I've only seen a handful of nice flowers all year, and she's a big bush now. I'm really liking Blush Noisette though it's very young. I think it's going to be a good one. One that is VERY BS-free is an old HT, Mme Abel Chatenay (2nd year) and has been blooming continuously not in flushes. If you like magenta, Enchantress has been great (planted in March). So far hardly any BS & blooms a lot. General Schablikine is another fave, well foliated, minimal BS, blooms in flushes, gorgeous brick red irregular shaped flowers, doesn't seem to mind western sun. I should have been out in the yard today since it's been cloudy until just the last hour and 82 degrees, but I am totally unmotivated now that summer is here full blast. I would feel more pressure to deadhead my 2 Marie Pavies but I have two Australian polyanthas arriving this week to replace them so no need. :)) Sherry...See MorePreviously sprayed roses, can they adapt to life without spraying
Comments (19)I do not know how long blackspot takes to mutate. I am more familar with people getting a new race (variant, pathotype) of blackspot when they purchase an already diseased rose with a different race (varient, pathotype) of blackspot. Title: Identification of five physiological races of blackspot, Diplocarpon rosas, Wolf on roses Authors: Debener, T.; Drewes-Alvarez, R.; Rockstroh, K. Authors affiliation: Inst. Zierpflanzenzuechtung, Bundesanstalt Zuechtungsforschung, Kulturpflanze, Bornkampsweg 31, D-22926 Ahrensburg, Germany. Published in: Plant Breeding, volumn 117, pages 267-270, (1998). Abstract: "Differentiation into physiological races of Diplocarpon rosae, which causes blackspot on wild and cultivated roses, was investigated with single conidial isolates of the pathogen. Infection experiments with a simple excised leaf assay demonstrated differential interactions between single isolates and a set of 10 test rose genotypes. Differential reactions could be observed among rose varieties as well as between and within a wild rose species. Accordingly, five different physiological races can be identified among the 15 isolates tested. A breeding line and one genotype of the wild species Rosa wichuraiana were found to be resistant against all isolates tested. These data will be employed in further investigations on the genetics of blackspot resistance in roses and for resistance breeding programmes." ----------------------------------------------------------------------------- Title: Response of selected old garden roses to seven isolates of Marssonina rosae in Mississippi Authors: Spencer, James A.; Wood, Opal W. Authors affiliation: Dep. Plant Pathol. Weed Sci., Miss. State Univ., Mississippi State, MS 39762, USA. Published in: Journal of Environmental Horticulture, volumn 10, pages 221-223, (1992). Abstract: "Seven isolates of Marssonina rosae (imperfect stage of Diplocarpon rosae) elicited different blackspot disease expression among 39 Old Garden Roses in laboratory tests. 'Felicite Parmentier' (Alba), 'Mme. Hardy' (Damask), 'The Bishop' (Centifolia) and 'Rosa Mundi' (Gallica) showed no symptoms. 'Cardinal de Richelieu' (Gallica), 'Hermosa' (China) and 'Leda' (Damask) were the most susceptible showing a cultivar ratings mean of 2.86 or more. The Wayne variant was the least virulent, causing susceptible reactions on only 46.1% of the roses. The Hinds variant was the most virulent and caused symptoms of 89.7% of the rose plants tested. The remaining five variants caused disease on 69.1% to 79.5% of the plants." ---------------------------------------------------------------- Title: Occurrence of pathotypes of Diplocarpon rosae on roses in Belgium. Authors: Leus, L.; Kegelaers, G.; Van Bockstaele, E.; Hoefte, M. Authors affiliation: Department of Plant Genetics and Breeding, CLO, 9090, Melle, Belgium. Published in: Plant Protection Science, volumn 38(Special Issue 2), pages 536-538, (2002). Abstract: "Monospore cultures of black spot (Diplocarpon rosae Wolf) were established from isolates collected on outdoor grown roses at different locations in Belgium. These monospore cultures were tested on rose cultivars and species with different levels of natural resistance to examine the possible existence of different pathotypes. For this purpose a screening protocol including scoring after artificial infection was developed on in vitro plantlets. Differences between the examined isolates proved that there exist different pathotypes of Diplocarpon rosae in Belgium."...See Morekaye
14 years agolast modified: 9 years agosammy zone 7 Tulsa
14 years agolast modified: 9 years agokaye
14 years agolast modified: 9 years agojimmiesgran
14 years agolast modified: 9 years agojerijen
14 years agolast modified: 9 years agojoebar
14 years agolast modified: 9 years agognabonnand
14 years agolast modified: 9 years agogreybird
14 years agolast modified: 9 years agojerijen
14 years agolast modified: 9 years agopalustris
14 years agolast modified: 9 years agojerijen
14 years agolast modified: 9 years agocweathersby
14 years agolast modified: 9 years agomad_gallica (z5 Eastern NY)
14 years agolast modified: 9 years agognabonnand
14 years agolast modified: 9 years agopalustris
14 years agolast modified: 9 years agomad_gallica (z5 Eastern NY)
14 years agolast modified: 9 years agojerijen
14 years agolast modified: 9 years agoMolineux
14 years agolast modified: 9 years agotheroselvr
14 years agolast modified: 9 years agosammy zone 7 Tulsa
14 years agolast modified: 9 years agognabonnand
14 years agolast modified: 9 years agojerijen
14 years agolast modified: 9 years ago
Related Stories
MATERIALSInsulation Basics: What to Know About Spray Foam
Learn what exactly spray foam is, the pros and cons of using it and why you shouldn’t mess around with installation
Full StoryREMODELING GUIDESThe Hidden Problems in Old Houses
Before snatching up an old home, get to know what you’re in for by understanding the potential horrors that lurk below the surface
Full StoryGARDENING GUIDESGreat Design Plant: Knock Out Roses
As glorious as their high-maintenance kin for a fraction of the work, Knock Out roses make even beginners look like garden stars
Full StoryGARDENING GUIDESRoses: Crowning Touch of Gardens
Whether you're the Miss or Mister America of gardening or take a hands-off approach, roses can be a winning addition to your landscape
Full StoryWINTER GARDENINGPruning Secrets for Exquisite Roses
Encourage gorgeous blooms year after year with this time-tested advice on how to prune your rosebush in winter for health and shape
Full StoryGARDENING GUIDESWhat Kind of Roses Should You Grow?
Want to add the beauty of roses to your garden? Find out which ones, from old-fashioned to modern, are right for you
Full StoryGARDENING GUIDESLearn the Secret to Bigger and Better Roses
Grow beautiful roses using both ordinary and unusual soil amendments
Full StoryGARDENING GUIDES5 Favorite White Roses for a Purely Beautiful Garden
How does your garden glow? With roses that look like light and smell divine
Full StoryPLANTING IDEASGreat Garden Combo: Rose + Clematis for Small-Space Impact
We all need somebody to lean on. And when a rose supports a climbing vine, the results can totally transform a small garden
Full StoryGARDENING GUIDESGreat Garden Combo: 3 Wonderful Plants for a Deer-Resistant Screen
Protect your privacy and keep deer at bay with a planting trio that turns a problem garden area into a highlight
Full Story
sherryocala