An age-old holiday tradition comes to an end at Z's Trees By Kari Iverson-Sechi Published November 27, 2017 1:28pm CST FOX 9 Minneapolis-St. Paul Loading Video… This browser does not support the Video element. Minnesotans choose and cut down their own Christmas trees at Z's Trees in Cologne, Minn. Christmas trees loaded on top cars at Z's Trees in Cologne, Minn. Customers ride in a wagon behind the tractor to a field where they can pick out their Christmas trees. Customers ready to find their perfect Christmas tree.