Q.Blackeyed susan the petals stayed green, never turned yellow. The whole stalk was this way. How weird
All my others were perfect

GKH_Susan
Certified GKH Gardening Expert
Certified GKH Gardening Expert
Answered on August 9, 2020
Looks like aster yellows, a virus transmitted by leafhoppers.
https://www.gardeningknowhow.com/plant-problems/disease/aster-yellows-disease.htm
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