Problems in the garden
I don't know if it's coincidence, but I've noticed discoloration
problems since I've been spraying with NEEM. I've dealt with blackspot, I've had that "tree fungus" thing that starts with a C (never knew what it was before but it never really bothered me before). The thing that alarms me is a purple "bruising" on the stems of Old Blush, as well as spotting on the leaves that I've noticed on other plants as well (including my newly planted single Don Juan. Felicia also has a strange yellowing of the leaves that doesn't look like blackspot. Here are some pictures: Felicia: http://mywebpages.comcast.net/ddweil2/Problems1.jpg Could this be overfertilization maybe? http://mywebpages.comcast.net/ddweil2/Problems2.jpg This is the purple brusing that you'll see later on Old Blush. This is my newly planted Don Juan in front of the porch. http://mywebpages.comcast.net/ddweil2/Problems3.jpg Same here, only on Aloha, which is also suffering from blackspot as usual. http://mywebpages.comcast.net/ddweil2/Problems4.jpg This is the most worrisome. This is a new cane from Old Blush. Most of the new canes have this "bruising". http://mywebpages.comcast.net/ddweil2/Problems5.jpg And, just for giggles, here is what the beetles are doing to my Felicia panticles. Then again, not *everything* is a problem: http://mywebpages.comcast.net/ddweil2/NotAProblem.jpg The glads are poppin' http://mywebpages.comcast.net/ddweil2/NotAProblem2.jpg And so is Don Juan, this planting fortunately not exhibiting any unusual spotting or discoloration. Any insight would be appreciated. Could it be the NEEM that's causing the purple? It certainly isn't keeping the beetles *or* the blackspot away... |
Problems in the garden
Dave i've never used neem oil but those look just like the burns I get when I apply the cornell mix w/ hort. oil and the tempreture is above 80F. I try to push the envelope when I should not sometimes. Alba Meidiland in particuler has a lot of trouble with that concoction. As far as cure don't know what to tell you. The damaged leaves will hang around but they look so bad they should be euthanized. The cane damage looks serious. Though it will probably survive then croak during winter. -- Theo in Zone 5 Kansas City "dave weil" wrote in message ... I don't know if it's coincidence, but I've noticed discoloration problems since I've been spraying with NEEM. I've dealt with blackspot, I've had that "tree fungus" thing that starts with a C (never knew what it was before but it never really bothered me before). The thing that alarms me is a purple "bruising" on the stems of Old Blush, as well as spotting on the leaves that I've noticed on other plants as well (including my newly planted single Don Juan. Felicia also has a strange yellowing of the leaves that doesn't look like blackspot. Here are some pictures: Felicia: http://mywebpages.comcast.net/ddweil2/Problems1.jpg Could this be overfertilization maybe? http://mywebpages.comcast.net/ddweil2/Problems2.jpg This is the purple brusing that you'll see later on Old Blush. This is my newly planted Don Juan in front of the porch. http://mywebpages.comcast.net/ddweil2/Problems3.jpg Same here, only on Aloha, which is also suffering from blackspot as usual. http://mywebpages.comcast.net/ddweil2/Problems4.jpg This is the most worrisome. This is a new cane from Old Blush. Most of the new canes have this "bruising". http://mywebpages.comcast.net/ddweil2/Problems5.jpg And, just for giggles, here is what the beetles are doing to my Felicia panticles. Then again, not *everything* is a problem: http://mywebpages.comcast.net/ddweil2/NotAProblem.jpg The glads are poppin' http://mywebpages.comcast.net/ddweil2/NotAProblem2.jpg And so is Don Juan, this planting fortunately not exhibiting any unusual spotting or discoloration. Any insight would be appreciated. Could it be the NEEM that's causing the purple? It certainly isn't keeping the beetles *or* the blackspot away... |
Problems in the garden
On Thu, 26 Jun 2003 08:32:25 -0500, dave weil
wrote: I don't know if it's coincidence, but I've noticed discoloration problems since I've been spraying with NEEM. Neem oil doesn't work and it makes your roses a mess. Theo is right--it burns. Why aren't you using an effective systemic like Orthenex? The bs you have will defoliate and weaken your roses and it does indeed encourage canker. I have maybe 5-10 JBs a year, and see them staggering around on the ground after a few bites. My roses suck right now because I have not had a dry enough period or time to spray them since mid-May, but they surely do not look as bad as yours. Except the ones that are totally naked. |
Problems in the garden
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Problems in the garden
"Shiva" wrote: My roses suck right now because I have not had a dry enough period or time to spray them since mid-May Ain't that the truth... |
Problems in the garden
In article , dave weil
wrote: Felicia: http://mywebpages.comcast.net/ddweil2/Problems1.jpg Could this be overfertilization maybe? Look like a lot of blind growth dying off to me. Doesn't look serious. I bet all the yellowing stuff just falls off with a sharp spray of the hose. http://mywebpages.comcast.net/ddweil2/Problems2.jpg This is the purple brusing that you'll see later on Old Blush. This is my newly planted Don Juan in front of the porch. I'm not sure this is the same thing as what is on the Don Juan cane, tho it looks the same as Aloha's problem. http://mywebpages.comcast.net/ddweil2/Problems3.jpg Same here, only on Aloha, which is also suffering from blackspot as usual. http://mywebpages.comcast.net/ddweil2/Problems4.jpg This is the most worrisome. This is a new cane from Old Blush. Most of the new canes have this "bruising". I have leopard-spotting on the canes of one rose, a huge climber, and I think it's going to kill it eventually. I can't tell if your rose has the same thing. Mine suffers stem dieback too, turning yellow first instead of the customary black. Fungicide has not helped. I thought it was sunburn because it usually appears on one side of the cane, but it gets on canes with no sun exposure at all. http://mywebpages.comcast.net/ddweil2/Problems5.jpg And, just for giggles, here is what the beetles are doing to my Felicia panticles. The *******s. Then again, not *everything* is a problem: http://mywebpages.comcast.net/ddweil2/NotAProblem.jpg The glads are poppin' http://mywebpages.comcast.net/ddweil2/NotAProblem2.jpg And so is Don Juan, this planting fortunately not exhibiting any unusual spotting or discoloration. Thank god for a few good blooms. |
Problems in the garden
In dave weil wrote:
Felicia: http://mywebpages.comcast.net/ddweil2/Problems1.jpg Could this be overfertilization maybe? It looks like a developing black spot mess to me - combined with either over-watering or poor drainage. I doubt it's overfeeding. As for the Neem oil, I agree it can burn. It's better when you spray out of direct sunlight, eg. late afternoon. I use so-called 'Pest Oil' which is a non-burning, advanced form of white oil that specifically doesn't burn rose foliage. Dave, try a milk spray. 1 part whole milk to 6 parts water. It has enough fat content to coat and gloss the leaves (i.e. do what your oil spray does), plus a bunch of proteins that turn nice and toxic to fungal diseases. Whether it works on Japanese beetles, who knows - they may not like the taste. Give it a try - at the very least your blackspot will go. |
Problems in the garden
On 26 Jun 2003 21:36:25 GMT, Daniel Hanna
wrote: In dave weil wrote: Felicia: http://mywebpages.comcast.net/ddweil2/Problems1.jpg Could this be overfertilization maybe? It looks like a developing black spot mess to me - combined with either over-watering or poor drainage. I doubt it's overfeeding. It's not blackspot. First, the yellow is different. Second, the leaves don't drop off when they get to be that color like blackspotted leaves do. And they just look "different" than the normal blackspot - not sure I can describe it. As for the Neem oil, I agree it can burn. It's better when you spray out of direct sunlight, eg. late afternoon. I use so-called 'Pest Oil' which is a non-burning, advanced form of white oil that specifically doesn't burn rose foliage. Well, I'm packing up the Neem, that's for sure. Dave, try a milk spray. 1 part whole milk to 6 parts water. It has enough fat content to coat and gloss the leaves (i.e. do what your oil spray does), plus a bunch of proteins that turn nice and toxic to fungal diseases. As well as driving the neighbors away when it sours, right? (Just kidding) Whether it works on Japanese beetles, who knows - they may not like the taste. Give it a try - at the very least your blackspot will go. I'm going to go back to Orthonex and see what happens. I don't think I have much longer with the Japanese beetles in any case. I seem to remember about 4 weeks, but I'm not sure... I might give the milk thing a try though... |
Problems in the garden
In article , Cass
writes: I have leopard-spotting on the canes of one rose, a huge climber, and I think it's going to kill it eventually. I can't tell if your rose has the same thing. Mine suffers stem dieback too, turning yellow first instead of the customary black. Fungicide has not helped. That was my first thought also. But I was hoping it wasn't, whatever it is is bad. I've had the same problem on several roses, a couple are on their last cane. Belinda's Dream seems to be overcoming the problem. I still loose a cane or two, but she makes enough new ones to make up for them. Dave is there any yellow on those canes? Mine develop the purplish spots, turn yellow, and then die. I'll make another post about a theory I have and see if I get any response. |
Problems in the garden
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Problems in the garden
On Thu, 26 Jun 2003 09:24:09 -0500, dave weil
wrote: I've never had much success with Orthonex when it comes to JB. They seem immune to it. I re-read the label, and it sure doesn't mention being effective againsts them, so maybe you're right. However, it doesn't mention white fly either, and it definitely must control them as I never see them unless I miss some spray cycles. Still--however I manage it, I have very few JBs. The ones I see ont hre ground are twitchy, the ones I see on the plant , I slap from the rose then stomp. Feels great! I had read that Neem acted as a repellent. I can state categorically that it doesn't work, at least while infestation is occuring. Which would be when you need it. So I wonder what the point is in applying it? Guess I'll go back to Orthonex. I had been spraying pretty faithfully in March and April. May was more difficult, but I got at least a couple of good sprayings in. It's not perfect, and the warnings on the label are scary, but I can tell you that mine look a bunch better when I spray with it than when I don't. I am making time this Sunday to look at the roses closely, and I know I will see increased canker and dieback--it always accompanies rampant blackspot and mildew. Or, actually, follows it. Yeah, that brusing really worries me I read the comments others made today, and I have to say that I have this on my roses too, and have never used Banner Max. I absolutely cannot see suspecting an anti-fungal as the cause of something like this. Burn? Sure. But creating dieback and a deadly kind of canker that has to be fungus related? No way. Makes no sense. (I'm less concerned about the yellowing leaves on Felicia - leaves can be replaced). To a point. However, bear in mind that being defoliated to any significant degree weakens the plant. I cannot recall where I read about this, but I can never forget watching it happen. The cavalier, "oh well, they'll make new leaves!" is partly true. Sure, they will but you will notice that the plant is smaller, lacks vigor and blooms, and winds up with more canker and dieback. Maybe all the energy it has to put into replacing leaves that did not live out their normal, undiseased lives just debilitates the rose. I don't know, but I can predict with confidence that I will lose several roses due to my inability to protect them from fungus during all this rain. |
Problems in the garden
On Thu, 26 Jun 2003 15:14:42 -0400, "Ol' Thornfinger"
wrote: "Shiva" wrote: My roses suck right now because I have not had a dry enough period or time to spray them since mid-May Ain't that the truth... It's nice to have someone commiserate, thanks. Have you been able to spray yet? |
Problems in the garden
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