The best time to put up Christmas decorations in 2025 depends on your lifestyle and materials. Many start early November for longer cozy vibes, while traditional decorators begin after Thanksgiving for a fresh seasonal start. Real Christmas trees should be set up in early December for optimal freshness lasting four to six weeks. Artificial trees and winter greenery allow more flexibility and longer enjoyment. Prioritize pacing and purpose to let your holiday decor age gracefully through winter, creating joy and a comforting seasonal mood.