Climbing rose resistant to black spot
annainok
13 years ago
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marcy3459
13 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 MoreSuggestions for a disease resistant climbing rose?
Comments (9)Both really good suggestions. I didn't really realize there were rose societies, so I will have to check. Thank you so much! There are nurseries around, but, I also know that some of the folks working them aren't always out in the yard with every particular variety of rose. We have another rose bush (not climbing) that has been suffering terribly with very extensive black spot (the old owner planted it under a birch tree, and it gets shade pretty early in the day). I've sprayed, and sprayed and sprayed. It's just not a good spot for the poor thing. I will be removing it in a few weeks and deciding whether or not it is salvageable. Since I will be planting the new rose in a much more sunny (most of the day) spot, that is also near some edible currant plants, which I grow organically, I would prefer to not have to spray anything on the rose if I can help it, as I don't want it wafting over to the fruits....See MoreDisease resistant rose with black spot...
Comments (16)I have two suggestions. One is that there od more than one disease to spot a rose, and to me they look alike. The second sounds something like cortispora, cercospora(but I know what I wrote isn't quite correct.) The second thing is that my Knock Outs must often be pruned almost to the ground. It may be possible that you are allowing the roses to bloom on wood that is not real healthy. If that is true, and if this is one of your first blooms, have you looked down towards the base of the plant and to all the stems to be sure that the wood is healthy? I have been doing quite a bit of re-pruning because I think the damage of the winter freezes often takes time to reveal itself. The first flush, you know, is often the result of the vigor from the fall. After that flush, you often can really see what the freezes have done to the rose. Good luck Sammy...See MoreBest black spot resistant yellow rose
Comments (24)Hey, I live in Monmouth, Oregon near the state capital, Salem. Currently, I have Julia Child, Elina, and Easy Going. Initially, I was told that Elina does not like wet weather, but I persisted and she does get some bs, but I am able to control it. It is more of a pale, pale yellow almost cream colored. Has no fragrance but the blooms are large and last a while. I have a Veteran's Honor and make bouquets with the two as the blooms are a similar size and last a long time in the vase. Julia Child is wonderful. Very little disease, lovely fragrant (spicy) blooms and 3 to 4 feet tall. A very good yellow. After getting Livin' Easy and loving it, I decided to get its sport, Easy Going, and have been very happy with it. It is also disease resistant, medium fragrance, nice rich color. Stay away from Sunsprite, horrible disease magnet and the blooms blow in one day. Julia Child seems to fit the bill. Bon Appetit! CJ...See Moreannainok
13 years agomarcy3459
13 years agoox41234
13 years agosammy zone 7 Tulsa
13 years agoannainok
13 years agosammy zone 7 Tulsa
13 years agomarcy3459
13 years agosammy zone 7 Tulsa
13 years agoannainok
13 years ago
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