What are your most floriferous black spot resistant roses-please share
dianela7analabama
4 years ago
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dianela7analabama
4 years agoRelated Discussions
Will some roses develop resistance to black spot if not sprayed?
Comments (19)A 2011 USDA Beltsville, MD scientific paper supports the findings of the strawberry paper presented earlier in this thread. Title:Effect of cultural system and storage temperature on antioxidant capacity and phenolic compounds in strawberries Authors: Peng Jin a,b, Shiow Y. Wang c, Chien Y. Wanga,*, Yonghua Zheng b Authors affiliation: a Food Quality Laboratory, USDA-ARS, Beltsville, MD 20705, USA b College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, PR China c Genetic Improvement of Fruits and Vegetables Laboratory, USDA-ARS, Beltsville, MD 20705, USA Abstract: "The effects of cultural systems and storage temperatures on antioxidant enzyme activities and non-enzyme antioxidant components in two cultivars (âÂÂEarliglowâ and âÂÂAllstarâÂÂ) of strawberries were investigated. Fruit samples were hand-harvested from organic and conventional farms in Maryland, USA, and were stored at 10, 5 and 0 ðC. The results from this study showed that strawberries grown from organic culture exhibited generally higher activities in antioxidant enzymes. Moreover, the organic culture also produced fruits with higher level of antioxidant contents. Strawberries stored at higher temperature (10 ðC) had higher activities of antioxidant enzymes and antioxidant capacities than those stored at lower temperatures (0 or 5 ðC), in both organic and conventional cultural systems. In conclusion, strawberries produced from organic culture contained significantly higher antioxidant capacities and flavonoid contents than those produced from conventional culture, and even though low storage temperatures retarded decay, they also reduced the increase in antioxidant activities." Here is a link that might be useful: USDA paper...See MorePlease list your most disease resistant roses..
Comments (29)I don't know if Chinas and Noisettes grow as far north as you seem to be, but my Louis Philippe, Ducher, Spice, Champney's Pink Cluster, Old Blush, Prosperity also my Kordes and Drift roses all survived last summer with no BS, no Chili-thrips, and no Canker...which killed off most of my HTs and Modern roses.... I am getting more Drift and Kordes, and also Biltmore roses, to see how resistant they are.....seems the newer roses are being bred better than some of the older ones....sally...See MoreClimbing rose resistant to black spot
Comments (11)Let me give you a few off the top of my head: I tend to like roses that are easily trained; that is, one with flexible that 'bend to my will'. My absolute number one favorite climber is Francois Juranville. It is classified as a rambler, hybrid wichurana, bred in 1906. Height is said to be 15-25 feet, 10 foot width. I have this rose on an arbor that is 8 feet tall, 10 feet wide, and 4 feet deep. It covered the arbor in two years and that was from a band I direct planted. It's absolutely covered with soft pink blooms right now, has wonderful dark green, glossy green foliage and is less thorny than most roses, but does have thorns. It is said to have an apple fragrance but it is fragrance you have to search out, it doesn't drift. I have never seen a bit of blackspot on it. Another climber I have that is listed as a shrub rose is David Austin's James Galway. It is trained on a pillar and is about 8 feet tall. It is fragrant but you have to search it out. I have never seen this rose have blackspot and mine is ten years old. It is a bear though with its thorns. It is one of those roses that I have to get up my gumption to go out and prune or work with the new growth to get it back in bounds. It is a medium pink bloom. Third is Awakening. Awakening is a sport of New Dawn, hybrid wichurana, discovered in the 30s and introduced into production in the 1990s. It has a hybrid tea rose-like pale pink bloom and blooms nonstop. It is classified as strong in fragrance. This rose is planted on a new arbor we built just this spring, but the plant is in its second year since I kept in a pot until we got the structure built. It had very minimal blackspot last year in the pot, and by that I mean a dozen or so leaves, but none this year so far. I did have two other starts of this rose which I gave to a neighbor and we put her roses where they would cover a brick wall on which we built a wire system. They are covering about half of her brick wall so far in their second year. It is said to be 8-14 feet tall and 8 feet wide. I am planning on it covering an arbor that is 8 x 8 x 8. Those are my personal experience climbers that don't have blackspot problems for me and are fragrant. I have a Souvenir de la Malmaison which is a fragrance drifter, tolerates shade, has a wonderful palest pink bloom and is growing about 20 feet into a tree, but it loses its leaves to b.s. most years. You might also consider a Lady Banks White. Mine is incredibly fragrant, it smells like hyacinths to me. It is thornless, has 2-inch white blossoms that cover the plant and is never bothered with blackspot. It is a species or wild rose of the early 1800s. It will cover as big an area as you will let it. It grows in the same tree as my SDLM rose. Lady Banks is almost a tie for favorite with Francois Juranville simply because it is so low maintenance. But FJ wins out because it is a "ROSE"!! Marcy...See MoreBlack spot resistant rose recommendations in all colors?
Comments (15)If your friend wants an easy care, floriferous, fresh-scented climber, I highly recommend Harlekin aka Kiss of Desire. My roses went through my medical issues with me & suffered along with me & weren't pruned, fed or bs managed for a good 18 months. Each rose looked like a train wreck, with a couple of exceptions, most notably Harlekin. Another rose I can recommend for easy care in hot humid climate is Grand Amore. Beautiful velvety red huge abundant blooms, barely any bs. All my roses are OR & I don't spray. For a big, fragrant, deep pink, you can't go wrong with Cynthia. Heat & humidity don't bother her and she doesn't mind a touch of bs. Cynthia Harlekin at beginning of 2nd year, planted from a band. Now in its 4th year. Harlekin has surpassed the trellis and is growing up around the light fixture....See Moredianela7analabama
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