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| Here are a series of photos and you can see some of the progression https://www.flickr.com/photos/127301701@N03/sets/72157647906439806/ So I planted these grapevines this year early in the summer and They have grown abundantly and still are, however I've been keeping tabs over the past month or 2 spots spreading on the leaves, leaf curl, discoloration of the stems as you can tell and yellowing and its gotten worse. Some people have told me its because its fall, its downey mildew and to send a leaf sample in, but I just want a proper diagnosis and to be told what to do. PLEASE HELP AS I LOVE THESE VINES AND WILL DO WHATEVER IS NECESSARY. |
Follow-Up Postings:
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| Where do you live? And why are you considering Pierce's disease? The vine is less than a year old and not even established. If it is some awful disease, you've only lost one year. Pierce's disease at Univ Calif |
Here is a link that might be useful: Pierce's disease
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- Posted by JordanStone none (My Page) on Wed, Sep 24, 14 at 9:21
| I'm considering this Pierce's just by the look…I would just like a diagnosis so this doesn't affect my leaves for next year. All the leaves are slowly going after being affected by whatever is posted in the pictures. |
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| Jordan: If it were Pierce's disease then for your vines there won't be a next year, they'd be dead. That disease is an issue only in warm winter climates. Where do you live? The lower right pic looks like it might be phylloxera. What does the other side of leaf look like where those round spots are on top surface? Nothing on your vines says they might die next year. It's normal for leaves to look ratty this time of yr. |
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- Posted by JordanStone none (My Page) on Wed, Sep 24, 14 at 14:43
| I live in NJ I took some more pics so you can see and you can also notice whatever it is starting on the newer larger leaves as well. https://www.flickr.com/photos/127301701@N03/sets/72157647978848392/ |
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| Definitely not Pierce's. Some small critters chewed on the leaves. Can't tell you what unless you can post an image after you find them. In any event, the damage is too minor to be significant. |
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| Pierce disease isn't an issue in NJ. Actually your plant looks excellent for this time of yr. It's normal to have a few insect damaged leaves. That's all I see in those last photos, nothing serious. |
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| Doesn't look like Pierce's Disease. PD starts on the outer edges of the leaves. Also, NJ is outside the range of PD. See below for another link - it has all the info you'll need. |
Here is a link that might be useful: Pierce's Disease - Double A
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- Posted by milehighgirl CO USDA 5B/Sunset 2B (My Page) on Wed, Sep 24, 14 at 16:53
| Jordan, It seems that others have answered your questions on your previous posts. Did you not think the answers were sufficient? Concord Grapes leaf question?? Concord Grape Leaves Question?????? |
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- Posted by JordanStone none (My Page) on Wed, Sep 24, 14 at 21:18
| I didn't find the answers to be sufficient because they weren't definitive. From the sounds of it maybe this is how some of the leaves look. It's just concerning because every week whatever damage that's on the leaves is spreading. In the link below you can see the change in some of the leaves as well as the backs. https://www.flickr.com/photos/127301701@N03/sets/72157647978848392/
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- Posted by gator_rider2 z8 Ga. (My Page) on Thu, Sep 25, 14 at 7:50
| Spray for leafminers that stop damage to leaves. |
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