Why Do My Vincas Have Yellow Leaves. Repeat every 2 inches (5 cm) in all directions. vinca (catharanthus roseus) is a perennial in usda zones 9 t0 11 but is grown as an annual in most regions.
Why are my azalea leaves turning yellow? Redeem Your Ground - image credit : redeemyourground.com
Another major concern is a disease called alternaria leaf spot. during the spring months, vinca is susceptible to root and stem rot. If you live in a region where there are strong sunlight hours, it is advisable to shade your vinca.
Why are my azalea leaves turning yellow? Redeem Your Ground
Sink a steel bar or tomato stake a foot deep and pull it out. depending on when you planted the vinca, they may be progressing through symptoms caused by cold weather. Vinca may normally curl up during hot, dry summer weather as part of an effort to conserve water. i have planted some vinca (annuals) and the leaves are turning yellow.
