Ideal Temperature for Perennial cornflower
Images of Perennial cornflower
Signs of Cold Stress in Perennial cornflower
Symptoms
Perennial cornflower tolerates cold well and flourishes when temperatures are above 60℉. In winter, it needs to stay above 50℉. If the temperature drops below 40℉, while winter changes might not be obvious, spring may see reduced or absent sprouting.
Solutions
In spring, remove any sections that have not sprouted.
Signs of Heat Stress in Perennial cornflower
Symptoms
In summer, Perennial cornflower should be maintained below 70℉. When temperatures surpass 80℉, the plant's leaves might lighten, curl, become prone to 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.
