Need Purple No Spray Rose
Molineux
16 years ago
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Need no-spray replacements for 3 roses
Comments (14)If you are looking for Austins, I don't spray Mayflower or Queen of Sweden. The first couple years of Jubilee Celebration, it was a wimpy plant and had some BS issues, but now in its 4th years, it has really shaped up and never had more than an occasional and very minor bout of BS--mostly disease-free. Gorgeous coloring. I've also order Lady of Shalott for this coming spring--it is supposed to be just about impervious to BS, and its colors pick up some of the yellow-golden-orangy shades that Tamora and Pat Austin feature. I'm really looking forward to the Lady of Shalott. If you want a rugosa that doesn't get too big, try Fru Dagmar Hastrup. Mine is still small but had the most charming single pink flowers and no disease problems at all. Lately I've been recommending Our Lady of Guadalupe also--light pink/darker pink reverses floribunda--abundant bloomer and just minor bouts of BS occasionally. Geez, that plant sure does bloom and bloom and bloom! Oh, how could I forget my favorite new plant--Mystic Beauty (from Roses Unlimited). Exquisitely beautiful and so far no disease issues at all. It is a Bourbon. Have fun picking the best roses. Kate...See MoreNeed a Nice Purple Rose
Comments (5)Intrigue is nice, fairly compact, a floribunda. Don't know how well it lasts in a vase, I'm sure someone else can answer that. Midnight blue is one of the darkest purple without red overtones out there. Its quite new. It is a shrub and can exhibit in that class. It cluster blooms with smallish, fragrant blooms. I have a hard time taking pics of it as they tend to look redder in the pictures than they do to the naked eye. This one is hovering around 3 x 3 after one year. The next rose season (2006) will bring the introduction of Ebb Tide from Weeks. See their website for pictures to drool over. It is a sister/brother seedling from the same batch that produced Midnight Blue and the Armstrong Garden Center's excluseive, Route 66. Route 66 is another gorgeous dark purple. A purple Austin would be The Prince but it might be too big for your desired spot. Suz...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 MoreBouquets of no-spray roses
Comments (305)James Galway gets over 20 feet tall in late fall as 7th-year-own-root in my zone 5a. James' Blooms has amazing carnation scent when aged in the vase. It lasts 5+ days in the vase. Below bouquet was taken mid-July, showing pink Comte de Chambord, and bright-red L.D. Braithwaite at center (lasts long in the vase, but not much scent). Left yellow is Golden Celebration (form is bad in hot & dry). Dark reds are W.S. 2000, it's a continuous bloomer as 12th-year-own-root. Lavender Crush is good for the vase, it used to be deep ugly purple, I don't like the color so I dug out the top 1 foot of clay and mixed pelletized lime to soften the color, and it has been 100% healthy with zero blackspots, plus the color is lighter & prettier: Below pic. showing Lavender Crush with zero blackspots as 7th-year grafted-on-Dr.Huey. Pic. taken this August 11, 2022. It's over 5 feet tall and blooms at the top:...See Morestefanb8
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