Dahlia Tubers

colleen.tennis@gmail.com added on November 29, 2016 | Answered

I dug up my dahlia tubers and the tubers have bumps on them. I have never seen these before on my tubers. Is this a fungus or disease? What should I do?

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Certified GKH Gardening Expert
Answered on November 29, 2016

I am not sure what these bumps are. They may be normal swellings called lenticels that can appear in wet weather. Or, they could be caused by nematodes:

I don't think it is any more serious disease, like crown gall.

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