Q.My Annual Vinca Plants Are Dying, Gradually Over Time, All Summer. What Can Cause This?
annual vinca pants are planted in containers all over my yard, some in sun, some in shade. Several weeks ago they began dying, container at a time.

native_species
Answered on August 28, 2022
If your soil has been wet this year, it could be a fungal disease. This will spread from plant to plant if you don't remove the affected plants. Here's an article about it.
https://www.gardeningknowhow.com/ornamental/flowers/annual-vinca/vinca-plants-problems.htm
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