Since he was a boy in the 1950s, David Hansen has watched several generations of trees come and go at the Hansen Tree Farm in Ramsey.
"A lot of people don't think a forest changes," but after working in the fields, harvesting Christmas trees and replacing them, he said, "you see how quickly it does."
The older he gets, the more the cycle seems to speed up.
This year, the family-owned farm turned 60. It's one of the oldest Christmas tree farms in the state.
As a testimony to the different eras at the farm, 50-foot pines dating back to the original planting dwarf newer pines, firs and spruces.
David Hansen's parents, Henry and Charlotte Hansen, along with his grandfather Harry Lindquist, started the 40-acre farm in 1952, the same year he was born. Charlotte is now 98.
Henry, who was a forestry professor, drew inspiration from the tree plantations he'd seen in Europe and in the Eastern United States. Before that, Christmas trees came from the wild, David Hansen explained.
In the beginning, the farm sold trees to florists and local tree stands, but it wasn't long before the "cut-your-own-tree" trend came along.