Trees have different strategies for making a living. Gymnosperms — conifers, junipers, and their friends — are mostly evergreens, but even here there are exceptions: Larch, Bald Cypress, Dawn Redwood. read more
Certain trees are used as Christmas trees because they have leaves in the winter season. So, Christmas trees are not a specific species of tree. Several wintergreen species of conifers are used as Christmas trees. read more
However, broad leaves are a major source of water loss, so our northern deciduous tree species drop them in the fall. Needles have proportionately less surface area than leaves and also have better water-loss control barriers. Nevertheless, all conifers lose older, more worn-out needles each fall. read more