Knowledgebase
What is happening? #880925
Asked August 10, 2024, 11:58 AM EDT
Otter Tail County Minnesota
Expert Response
https://www.gardenia.net/genus/rudbeckia-hirta-black-eyed-susan
Is it possible that something or someone is pulling/eating the petals? The plants look healthy otherwise. What is left looks more like the start of a seed pod that develops afer blooming.
Thank you for the response, unfortunately..they never put out blooms for critters to eat. There are a few that have bloomed. It just stumps me.
Hi Tammie,
The first photo shows flowers with distorted petals. I think this is aster yellows, a disease spread by leaf hoppers. It can’t be cured.
You should remove the plants and dispose of them.
Here’s information on aster yellows:
https://extension.umn.edu/plant-diseases/aster-yellows
Sorry for the bad news. Thanks.