Ideal Temperature for Grand Fir
Images of Grand Fir
Signs of Cold Stress in Grand Fir
Symptoms
Grand Fir exhibits exceptional cold hardiness, yet winter temperatures should remain above 32℉. Should the temperature fall below this point, while no immediate alterations might be apparent in winter, branches could become fragile and desiccated by spring, with no new growth appearing.
Solutions
During spring, remove any lifeless branches that have not developed fresh foliage.
Signs of Heat Stress in Grand Fir
Symptoms
Grand Fir does not tolerate elevated temperatures well. When the temperature surpasses 65℉, it might shed a considerable number of leaves, and in extreme instances, the entire plant could wilt and perish.
Solutions
Remove any parts that are scorched by the sun and dried out. Relocate the plant to an area offering protection from the midday and afternoon sun, or employ a shade cloth for cover. Water the plant in the morning and evening to keep the soil damp.
