This is your annual reminder to avoid frequent overhead irrigation to prevent periwinkle blight. Periwinkle blight, also known as aerial phytophthora, is a major problem for annual vinca or periwinkle ...
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 ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback