Periwinkle blight (aerial phytophthora) is caused by the fungus Phytophthora parasitica. It’s the number one disease problem for annual vinca or periwinkle (Catharanthus roseus) and can persist in the ...

Periwinkle, or Vinca minor, is a resilient, low-maintenance and versatile plant that thrives in both sun or shade. Wherever it is planted, periwinkle will quickly establish itself, filling problem ...

I just planted Mrs. G a bed of colorful periwinkles in a hot, sunny exposure. Periwinkles are among the showiest of heat-tolerant, summertime bedding plants and come in an amazing range of colors.