Knowledgebase
Insects or disease #869248
Asked May 20, 2024, 12:19 PM EDT
Baltimore County Maryland
Expert Response
That is damage which is common on many plants this time of year, caused by the four-lined plant bug.
Here is our page which includes a video about them:
https://extension.umd.edu/resource/plant-bugs-flowers/
There is only one generation a year and the plants are easily able to continue to grow and outgrow the damage. You can pinch off the worst affected leaves if you like.
Christine