Black spots on sunflower stems, leaves look fine?

Lmbauer2017

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Joined
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Messages
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Location
Houston, Tx
Hardiness Zone
9a
Country
United States
Howdy,

A sunflower we bought last year reseeded itself this year and is looking beautiful. Yesterday though I just noticed one of the stalks has these patterned black spots along it. Does anyone have any experience with this? I looked up common diseases in sunflowers, but they all seem to start at the leaves, and they look fine.

Any advice much appreciated. Thanks!


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