Vinca Flower Hardiness. It is also called lesser periwinkle or creeping myrtle. Natives are the best option but some bedding plants can fit the bill.
Planting in partial shade gives the best results. The best preventive measures are to avoid overwatering and provide good drainage. It is also called lesser periwinkle or creeping myrtle.
Growing seasons which have been especially rainy can help contribute to the spread of disease among vinca plants.
May 31 2018 Plant your vinca minor when temperatures are around 24 to 38 C 75 to 100 F. Although this plant isnt frost-hardy you can grow it as a perennial if you live in USDA plant hardiness zones 9 and above. In terms of temperatures. Hardiness zones 4-8 are the optimal regions for periwinkle growth.