As a general rule of thumb for seasonal decor for Spring/Summer, Fall, Winter, switch the decor when the weather starts to change. If we're talking about holiday decor, add in your holiday decor about two to four weeks before a holiday. This depends on the holiday's importance, but is a good place to start.

Secular holiday decorations include things like tinsel or garland, snowmen, candy canes, reindeer, etc. Religious symbols or holiday decorations with religious content may not be displayed.