Ideal Temperature for Sitka spruce
Images of Sitka spruce
Signs of Cold Stress in Sitka spruce
Symptoms
Sitka spruce exhibits exceptional cold hardiness, but 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 fresh foliage.
Signs of Heat Stress in Sitka spruce
Symptoms
Sitka spruce does not withstand elevated temperatures well. When temperatures surpass 65℉, it might shed a considerable amount 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.
