Periwinkle (Vinca) Yellowing: It's Not Dying, It's Cycling

The Symptom

Periwinkle leaves turning severely yellow despite daily morning watering. No pests found.

The Natural Cycle

Periwinkle (Vinca) "runs its course"—it becomes leggy and yellowed when past its prime. This is normal, not a disease.

The Fix: Hard Pruning

Cut the plant back to near ground level. Fresh, vigorous growth will emerge, looking just like a new planting. In Florida, it grows wild and responds beautifully to this treatment.