I have planted Vincas every year for the past 5 years and have never had a problem. This year they are really struggling. Can they be salvaged? What can be done? Thank you so much!!! Almost 3 flats are turning yellow and some look like they are being eaten by something.
Have you fertilized? It does look some kind of deficiency in the soil. I trust the wood mulch is old and not fresh as it can rob the soil of nutrients as it decomposes. It could be this unusual cool weather too.
I don't see much evidence of insect damage though.
