Bouquets of no-spray roses
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spray cocktail roses left over spray how to dispose of
Comments (1)Sounds like you may be using a hose-end sprayer. These are not good for applying pesticides because they mix so inaccurately. Pump-up tank sprayers are inexpensive and reliable. To dispose of pesticides that are out of the container, the best of bad options is to mix with gallons of water and spread it widely around. Most pesticides will break down after exposure to light, air, and bacteria. Also, dilution reduces toxicity. Pesticides in their container may be wrapped and sent to the dump. It's not a good idea to spray insecticides routinely--regulars here, along with most experienced rose growers, don't do that....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 MorePlease help me chose a rose from Roses Unlimited.
Comments (34)Thanks for digging up those photos, Curdle. I think I am gong to be very happy with my CdP. I'm happy to hear your comparison to Yves P. I think they will look lovely together, with Souvenir de la M between them. They sound alike enough to look nice near each other, while different enough to look like two distinct roses. I soooo can't wait for some blooms. It sounds like she is an eager bloomer, so I'm guessing I will have flowers by May. CdP and Sonia Rykiel will be arriving in March, and roses usually get going very quickly here (with a couple of exceptions). I still kind of think of Versigny as "one that got away", but I only have so much space. When/if Augusta Louise becomes available in the US, I will find the space for her. The photos posted on this forum have been incredible! Thanks again. Lisa...See MoreHelp! Pick the most FRAGRANT Roses from this list!
Comments (37)You have so many on your list that I’m expecting this Spring so I have to say you‘ve got excellent taste. Lol! I’m a newbie this past summer to roses so I can’t comment on overall longevity and health but I did a LOT of research when choosing my roses. I’m, personally, I big fan of Marchesa Boccella/Jacques Cartier and bought her this past late summer. I got two beautiful blooms out of her. They smell incredible and open very quickly. They don’t last a particularly long time though. I’m also a very big fan of Munstead Wood and planted 2 own-root this past summer with a grafted one ordered for Spring. I really wanted Lady Emma Hamilton but all my research turned up that she just doesn’t do all that great in cold zones. Bolero and Earth Angel smell incredible! I’d give Bolero the edge though...she really pumps out blooms. Her form is more along my taste also. Short stems though so maybe not the best for cutting? Earth Angel has the longer stems. I have PCdM and Emily Brontë coming this Spring, as well as (hopefully!) Eustacia Vye. I’m really looking forward to those. PCdM has rave reviews from so many enthusiasts...I can’t imagine anyone would regret planting her. My Bolero, from FGL. She was so tiny when I planted her in late August. Still had large blooms!...See Morestrawchicago z5
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