Ideal Temperature for Dense-flowered mullein
Images of Dense-flowered mullein
Signs of Cold Stress in Dense-flowered mullein
Symptoms
Dense-flowered mullein tolerates cold well and grows optimally when temperatures exceed 65℉. In winter, maintain temperatures above 50℉. If temperatures drop below 40℉, while no immediate winter changes may be apparent, spring may see reduced or absent sprouting.
Solutions
In spring, remove any sections that have not sprouted.
Signs of Heat Stress in Dense-flowered mullein
Symptoms
During summer, Dense-flowered mullein needs temperatures below 75℉. When temperatures surpass 85℉, leaves may lighten, curl, and suffer sunburn; in extreme cases, the whole plant can wilt and dry out.
Solutions
Remove any sun-damaged and desiccated portions. 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.
