Q.My tithonia has buds with a flower that has formed it the centre part and no petals
My plant looks healthy but the flowers are strange as they have all formed just the centre part without any petals. Can anyone explain why. I am adding a photo to clarify
GKH_Susan
Certified GKH Gardening Expert
Certified GKH Gardening Expert
Answered on September 15, 2020
Here are some possibilities: aster yellows disease, thrips, or mites.
https://www.gardeningknowhow.com/plant-problems/disease/aster-yellows-disease.htm
https://www.gardeningknowhow.com/plant-problems/pests/insects/controlling-thrips.htm
https://www.gardeningknowhow.com/plant-problems/pests/insects/what-are-eriophyid-mites.htm
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