mint disease

Asked May 16, 2020, 10:50 AM EDT

the spearmint and peppermint I grow in my herb garden have withered growth tips and a black color. are there any integrated pest management controls I could consider? thank you. Neal

District of Columbia County District of Columbia

1 Response

Hi- Do the blackened areas on your mint plants look like tiny spots? Four-lined plant bug nymphs are active now and might be responsible for the issue you are seeing. It would be helpful if you could attach a photo and we can take a look.

Four-lined plant bugs suck on plant sap and seem to favor plants in the mint family. Plants typically outgrow the damage by mid-summer. Here is our page about them.
And here is more information from Penn State,

If this is not the type of damage you are seeing, please send us photos and we will take a look. You can attach up to three photos at a time.