Linked from
The 25 pages that link to Christmas tree, each with the reason it gives.
PinaceaeRelated: Firs, spruces, and pines are widely cultivated and harvested for this use.
PinusRelated: Some pine species are cultivated and sold as Christmas trees.
PineRelated: Several pine species are grown and sold as Christmas trees.
AbiesRelated: Several Abies species are cultivated for their shape, scent, and needle retention.
PiceaRelated: Several Picea species are cultivated or harvested for this seasonal role.
Picea glaucaRelated: White spruce is cultivated and sold as a Christmas tree.
Abies albaRelated: The silver fir is a traditional European Christmas tree species.
Abies nordmannianaRelated: Nordmann fir is widely grown and sold for this seasonal use.
Picea engelmanniiRelated: Engelmann spruce is cultivated and sold as a Christmas tree.
Pinus sylvestrisRelated: Scots pine is cultivated and sold as a Christmas tree in some regions.
Blue spruceRelated: Blue spruce is grown and sold as a Christmas tree for its form and foliage.
O TannenbaumRelated: The song’s fir became closely associated with the decorated tree tradition.
Pinus lambertianaRelated: Sugar pine’s branches and foliage have been used as ornamental greenery.