Ideal Temperature for Nettle-leaved mullein
Images of Nettle-leaved mullein
Signs of Cold Temperatures in Nettle-leaved mullein
Symptoms
Nettle-leaved mullein tolerates cold well and grows optimally when temperatures are above 65℉. In winter, it needs to stay above 50℉. If the temperature drops below 40℉, 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 Nettle-leaved mullein
Symptoms
In summer, Nettle-leaved mullein should be maintained below 75℉. When temperatures go above 85℉, the plant's leaves might lighten, curl, become prone to sunburn, and in severe instances, 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 keep the soil damp.
