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My dahlias are showing a disease that I have never seen before: The stem turns black, wilts, and between nodes is black and mushy. I use Miracle-Gro potting soil, an organic fungicide and water. Has anyone experienced anything like this before?
I've grown plenty of dahlias in my time and have found them to be very hale and hardy. But all plants are subject to one kind of disease or bug or another.
My dahlias are showing a disease that I have never seen before: The stem turns black, wilts, and between nodes is black and mushy. I use Miracle-Gro potting soil, an organic fungicide and water. Has anyone experienced anything like this before?
Those are all signs of overwatering, saturated soil that's ripe for fungi diseases.
I'm sure it's no consolation but mine seem to suffering a virus and I think I'll have to yank them. Hot and humid weather doesn't make it easy.
In all likelihood it is a fungus as Nitram said.
From your description the problem sounds like one of the following: Verticulum wilt or something similar called Sclerotinia Disease. I don't think the conditions have been really cool for you but there is the distant third possibility of Botrytis which is more common in cool, rainy conditions. Without a picture they are all still guesses.
My dahlias are showing a disease that I have never seen before: The stem turns black, wilts, and between nodes is black and mushy. I use Miracle-Gro potting soil, an organic fungicide and water. Has anyone experienced anything like this before?
is the miracle gro 5-20-20 that's what they like.. anything more is too much
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