![Wood's Blue aster](https://i0.wp.com/www.commonweeder.com/wp-content/uploads/2016/09/9-15-woods-blue-aster-closeup2.jpg?resize=800%2C600&ssl=1)
Blues in the autumn strike a different mood from that of the traditional expectation of reds and golds of the fall. And yet, there are many blues in the autumnal palette.
![Perennial ageratum](https://i0.wp.com/www.commonweeder.com/wp-content/uploads/2016/09/9-15-dahlias-and-perennial-ageratum2.jpg?resize=800%2C540&ssl=1)
The very blue perennial ageratum, or mistflower have tumbled in the heat to embrace the dahlias.
![Russian sage](https://i0.wp.com/www.commonweeder.com/wp-content/uploads/2016/09/9-13-russian-sage-perovskia1.jpg?resize=800%2C600&ssl=1)
Some may call it a shade of lavender, but I consider my Russian sage a part of my autumnal blues.
![Asters](https://i0.wp.com/www.commonweeder.com/wp-content/uploads/2016/09/9-20-mums-purple.jpg?resize=800%2C600&ssl=1)
If I allow lavender Russian sage I will also allow purple asters. I love asters in any color.
Is your garden blue in the fall?