Ideal Temperature for Common periwinkle
Images of Common periwinkle
Signs of Cold Stress in Common periwinkle
Symptoms
Common periwinkle tolerates cool temperatures moderately well and flourishes optimally when temperatures exceed 60℉. In winter, it should be maintained above 50℉. If the temperature drops below 40℉, foliage may begin to sag. Minor cases can lead to recovery, but severe instances will cause leaves to wither and eventually drop.
Solutions
Remove any parts damaged by frost. Before subsequent exposure to low temperatures, cover the plant with materials like non-woven fabric or cloth, and build a windbreak to shield it from cold gusts.
Signs of Heat Stress in Common periwinkle
Symptoms
In summer, Common periwinkle should be kept below 68℉. When temperatures surpass 77℉, leaves may lighten in color, tips might become dry and shriveled, foliage could curl, and the plant becomes more prone to sunburn.
Solutions
Cut off any parts that are sunburned and dried out. Relocate the plant to a spot offering protection from the midday and afternoon sun, or use a shade cloth to provide cover. Water the plant in the morning and evening to maintain soil moisture.
