Ideal Temperature for Herbaceous periwinkle
Images of Herbaceous periwinkle
Signs of Cold Temperatures in Herbaceous periwinkle
Symptoms
Herbaceous periwinkle tolerates cold well and flourishes when temperatures exceed 65℉. In winter, it needs to stay above 60℉. If temperatures drop below 50℉, while no immediate winter changes might be seen, spring may bring reduced or absent sprouting.
Solutions
In spring, remove any sections that have not sprouted.
Signs of High Temperatures in Herbaceous periwinkle
Symptoms
During summer, Herbaceous periwinkle should be maintained below 75℉. When temperatures surpass 80℉, the plant's leaves might lighten, curl easily, suffer sunburn, and in extreme cases, the whole plant could wilt and dry out.
Solutions
Remove any parts that are sunburned and dried. Relocate the plant to a spot offering protection from midday and afternoon sun, or use a shade cloth. Water the plant in the morning and evening to maintain soil moisture.
