Diseased tithonia?

Question

I gave a friend a tithonia plant and she sent me a picture of the blooms. It was a bloom without petals. It reminded me of aster yellow disease

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Answer 1

It looks like aster yellows to me too. There is no cure, so the infected plant should be removed to the trash.

https://www.gardeningknowhow.com/plant-problems/disease/aster-yellows-disease.htm