Ask a Question forum→Grape Vines Died Suddenly :(

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New Orleans
Lionessence
Jun 12, 2020 3:58 PM CST
I planted a few 1 - 2 ft muscadine grape vines in New Orleans and they were doing okay, for about a month. I was worried about the soil quality So I added about an inch of manure around the bases, mixed with a hand shovel, and covered them in Pine needle mulch just before a few days of heavy rain.

I hadn't been in my yard for a few days because of the rain but went out today and all the leaves had fallen off of all the vines! The branches still seem flexible and aren't brittle.

Did I do too much? Is it some sort of disease? Will they come back?

Thanks for any advice or prayers.
Name: GERALD
Lockhart, Texas (Zone 8b)
Hydroponics Greenhouse Region: Texas
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IntheHotofTexas
Jun 12, 2020 4:58 PM CST
With what you say you've done, changes being the first place I look, consider that too much mulch may keep them too moist or that a heavy layer of pine needle in contact with the vines has damaged then.

I guess I'd roll back the changes and see what happens, removing the pine needles. And straight manure might have been too much. Hard to roll back, but it might be possible to get a lot of it out and fill back with plain soil. You don't say what kind of manure. I have read that horse manure can kill grape vines. It's can be too high in nitrogen and have too much salt due to the fact that horses use salt blocks and lick up a lot of it. I personally wouldn't use uncomposted manure, except perhaps in a fallow plot in winter when it would have time to decompose.
Name: Daisy I
Reno, Nv (Zone 6b)
Not all who wander are lost
Garden Sages Plant Identifier
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DaisyI
Jun 12, 2020 6:35 PM CST
Lionessence said:Did I do too much?


Yes, you did too much. No, not a disease. You burnt the leaves right off of them. There's not much you can do to "roll back" as the manure and compost have been watered in and absorbed by the grapes.

Time will tell if they will survive. Next time, use just the compost, keep it about 12 inchs from the plants. Add the manure to the compost pile.

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New Orleans
Lionessence
Jun 14, 2020 1:35 PM CST
Alright. Thanks all! Next time, I'll leave well enough alone.

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