By continuing to use the website or clicking Accept you consent to our cookies and personal data policy and confirm that you are at least 18 year old. For details please see Privacy Policy and Terms
I agree its a bug that sucked the goodies out of that part of the leaf, do be watchful.
My pat response to it is a light coating of spinosad insect soap on the pot surface, not a lot.
So far so good. You can also hang a sticky trap
See what happens