Vinca Flowers Keep Dying. Jun 08 2020 Annual vinca doesnt require deadheading or the removal of faded flowers to continue blooming making it a wonderfully low-maintenance annual flower for sun. If you or rainfall water the plant too much it could develop stem and leaf rots or fungi.
Apr 08 2019 Growing seasons which have been especially rainy can help contribute to the spread of disease among vinca plants. Go to the dollar store and purchase a couple of those wire baskets with the tiny holes. It appears the plant is wilting from lack of water which is not the case and eventually the leaves fall off leaving only the stem.
If you or rainfall water the plant too much it could develop stem and leaf rots or fungi.
My Periwinkles Are Dying. Dec 09 2018 Keep the mulch two to three inches away from the plants stems to prevent the development of rot. Select plants with a healthy green appearance and uniform height. Looks like to me way too much water.