When it feels right for you.
Some people love to decorate for every occasion and others like to keep it simple. I am one of those!
As the seasons change, your view of the outdoors changes. I like to stay connected to the colors and smells of the outdoors by bringing in natural elements to decorate with when I find something that inspired me. This helps with an internal longing most of us have to be connected with nature and other life, called “biophilia”.
This is one reason pumpkins and other gourds, and the colors of the falling leaves (red, orange, and yellow) are common during Halloween and can be used to spruce up your decor in the fall. See my blog article on Three Reasons to Change Your Decor in the Fall for more ideas.
It is also one of the reasons people like to decorate with evergreen boughs, wreaths, and trees in December.
So if you enjoy the fall colors, you may want to re-decorate around mid-October to be ready for Halloween and Thanksgiving. Here is and example of an Edesign I did to celebrate the colors of fall. I incorporated some of my own fractal art, from my “Simorgh” design which was inspired by the Persian legend of the Great Simorgh, the most beautiful bird in all the world.