In the oriental Alps of Italy, silver firs grow in mixed forests with Norway spruce, beech, and other trees.Its cone scales are eaten by the caterpillars of the tortrix moth Cydia illutana, while C. duplicana feeds on the bark around injuries or canker.[9][7] The extract from the trunk was shown to prevent atherosclerosis in guinea pigs[10] and to have cardioprotective effect in isolated rat hearts.[11] Silver fir wood extract was found to reduce the post-prandial glycemic response (concentration of sugar in the blood after the meal) in healthy volunteers.As well as in its native area, it is also grown on Christmas tree plantations in the northeast region of North America spanning New England in the USA to the Maritime Provinces of Canada.