Organic treatment for Rose what works and what didn't?
Samuel Adirondack NY 4b5a
8 years ago
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Samuel Adirondack NY 4b5a
8 years agostrawchicago z5
8 years agolast modified: 8 years agoRelated Discussions
powdery mildew - spray didn't work
Comments (20)Thanks, Cupshaped, for the pictures. Beginners should notice the leaves showing their undersides-- this lets you spot PM from a distance before it even produces the white stuff-- although older leaves that have stiffened up usually won't show that. Fertilome Systemic is propiconazole, same as Banner and Bonide Infuse. It seems to be as effective as anything. I read a disturbing study the other day that found even the best fungicides ineffective when rose plants were already heavily infected and conditions for disease were optimum. So picking off infected leaves and stems makes sense in that context. My primitive sulfur fungicide has done nearly a perfect job of preventing PM this year, except on the no-spray roses that don't get blackspot, and which now are getting sprayed. Sulfur is widely used in agriculture for PM, so it is effective, but only as a preventative. Drought doesn't cause PM, but rain twice a week goes a long way toward preventing it. I washed down my roses this morning before spraying. PM germinates only on dry leaves at very high humidity, with temps mainly in the upper 50s and 60s F. These conditions occur mainly at night when the temperature holds for a few hours just above the dew point. Fog and heavy dews suggest PM conditions. PM is unlikely to germinate if the dew point is below 55, or if night temps are above 71, because dew points above 70 are pretty rare. Daytime temps in the 70s-low 80s are ideal for mycelial growth and release of spores. As Ann says, it doesn't like hot weather much. (from Horst's Compendium of Rose Diseases)...See MoreI didn't buy any roses tonight
Comments (6)Sigh, you convinced me. I bought Gemini and Fragrant Plum at Jungs for half off. Actually, they were 25% off, and then I could pay for half of that with my coupons. So they were really cheap. Then I bought Jude the Obscure for 40% off at the other nursery. They didn't have Valencia anymore unfortunately or I would have gotten that one too. Evelyn was left behind once again as I decided I liked Jude better. I decided that while the color on Night Owl was nice that I wanted bigger blooms. So I have a little pot ghetto now....See MoreWhat Made It... What Didn't Make It for 2009!
Comments (68)I don't remember clematis every coming up so late. I think I lost a new one, however, despite mulching. Maybe it just was too soggy of a spot. I still hope it comes up but time's running out. I also lost my Japanese blood grass and northern lights grass, but they were soggy spot. My Endless summer hydrangea survived fairly well as did the Tiger Eyes sumac. I had big sections where my lamium died out completely, which totally surprised me. Sometimes the plants survive and stay green, other times at least the roots survive. I'm not worried though, enough did survive that maybe I can fill in the area once again. Glen...See MoreWhat worked...what didn't ?
Comments (14)Yes, I'd also like to know which catalogue has those cabana boys! I'm exhausted, especially with all the watering, and the summer is not over yet. However more has worked than hasn't so I can't complain. My new roses are a joy! After months of indecision whether to buy roses I had decided they would be too much trouble to do this year when we are renovating the old beds. However on a trip to the city at the end of June one of the 'good' nurseries had them on sale so I bot 5 in large pots. Of course that necessitated making a new bed for them which was an enormous job. They have looked good from the start and I left a few blooms on them initially but then deadheaded seriously. They are now reblooming despite the hot dry weather we have been having. Of course I'm watering frequently and they seem to like frequent drinks of diluted alfalfa tea. I'm still concerned the deer might find them but we made the bed next to the house in the dog's large grassy yard so perhaps that will deter them. I'm soon going to move some of my lavender plants there as extra insurance. I know they are not necessarily easy plants and I'll have to mulch heavily in the fall but they are very pretty. The lilies I planted last year are blooming profusely, multiplying, and looking fantastic. I'm pleased with my new shade garden altho it's only had superficial weeding and needs a thorough one. Coming up on the to-do list - I've just been grabbing weeds that are blooming or threatening to take over as I hand water. I thot it might be too dry with the large trees taking all the moisture but with amending and occasional watering it's doing fine. Love all the heuchera and will buy more. I love my potted annuals, they've been a real pleasure when some parts of my garden have looked so 'destroyed' during this renovation process. Even in this heat they are still looking great with daily watering and frequent deadheading and fertilizing. I'm quite disappointed in the nursery that planted the azalea I bot. I thot the roots looked fine when I planted it but it didn't do well so I dug it up and there were a lot of wood chips in the center of the root ball! So I hosed the roots clean, planted it in good soil, and after frequent watering it's coming back. All of the other new plants have done really well. I'm not very happy with one of the new beds further out as I haven't spent enough time on it. Probably shouldn't have made it this year but it will survive. It has all deer resistant establish perennials I moved from my main garden so I didn't think I needed to baby it too much. The spirea looked as if it had died but is finally coming back. It really needed more water than I gave it. I've had a problem with too much direct sun in parts of my garden since we had some large trees removed and some of the Lady's Mantle have not done as well as usual. So I'm moving the young ones to semi-shaded areas and discarding the others. Just part of the evolution of a garden one has to adjust to. I'm disappointed I may have few sunflowers this year. We usually have lots as the birds are messy eaters and seed them all over. We usually transplant some to better locations. However there were very few coming up so I planted some and the chipmunks dug them up and ate the seed! I planted more and kept them indoors til they were a few inches tall. Put them out and those little !@#$% ate all except for the red flowering ones. So I have them in larger pots but not sure whether they will flower as were planted late with all the tomfoolery! The thistles the birds seeded around the feeder did extremely well!!! LOL This morning I thoroughly weeded and mulched so that bed looks nice again! Wonder how long it will last. I don't usually get thistles in my garden but there must be some type of bird that eats them in the wild and deposits them here....See MoreKhalid Waleed (zone 9b Isb)
8 years agoSamuel Adirondack NY 4b5a
8 years agojim1961 / Central Pennsylvania / Zone 6
8 years agostrawchicago z5
8 years agolast modified: 8 years agostrawchicago z5
8 years agostrawchicago z5
8 years agostrawchicago z5
8 years agojim1961 / Central Pennsylvania / Zone 6
8 years agostrawchicago z5
8 years agostrawchicago z5
8 years agostrawchicago z5
8 years agostrawchicago z5
8 years agostrawchicago z5
8 years agoSamuel Adirondack NY 4b5a
8 years agolast modified: 8 years agojim1961 / Central Pennsylvania / Zone 6
8 years agostrawchicago z5
8 years ago
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