Ideal Temperature for Subalpine fir
Images of Subalpine fir
Signs of Cold Stress in Subalpine fir
Symptoms
Subalpine fir exhibits exceptional cold hardiness, yet winter temperatures should remain above -20℉. Should the temperature fall below this point, while no immediate changes might be apparent in winter, branches could become fragile and parched by spring, with no new growth appearing.
Solutions
During spring, remove any lifeless branches that have not developed new foliage.
Signs of Heat Stress in Subalpine fir
Symptoms
Subalpine fir does not tolerate elevated temperatures well. When the temperature surpasses 70℉, it might shed a considerable number of leaves, and in extreme instances, the entire plant could wilt and perish.
Solutions
Cut off the sun-damaged and desiccated sections. Relocate the plant to an area offering protection from the midday and afternoon sun, or employ a shade cloth to provide cover. Water the plant in the morning and evening to keep the soil damp.
