Colorado Master Gardeners - Broomfield County Extension

10/14/2026

Plant Select is the country's leading source of plants design to thrive in high plains and intermountain regions; more beauty, less work.

10/13/2026

Join Drs. Jen Rushton and Emily Luna, from CSU, for a Halloween-themed dive into the world of plant diseases. We’ll explore fungi that resemble monsters,

10/12/2026

10/09/2026

🌼 Build your native plant knowledge at your own pace. Whether you’re a gardener, naturalist, or conservationist, these self-led courses help you create eco-friendly landscapes.

10/08/2026

The Denver Invasive Species Coalition is working to educate the public about the proper methods of killing the invasive tree of heaven.

10/08/2026

Discover expert tips on planting bulbs and dahlias to maximize year-round color in your garden, from critter-resistant options to striking autumn blooms.

10/07/2026

As days get shorter, trees get less sunlight. With less sunlight, trees make less chlorophyll, so the green color fades. Yellow and gold colors come from pigments called carotenoids that are already in the leaves. Orange and red colors come from anthocyanins, which trees start making in the fall. Read more here:
https://planttalk.colostate.edu/topics/trees-shrubs-vines/1728-leaves-change-color-fall/
photo: Donnetta Wilhelm

10/06/2026

Yes, we’re sawing the root ball. 🌳🪚

Container grown trees can develop roots that circle around the root ball.

Shaving off the outer layer encourages those roots to grow outward into the soil.

Before you plant a tree this fall, learn what to do and what to avoid: https://csfs.colostate.edu/2026/10/01/fall-tree-planting-tips/


📷Kamie Long, CSFS

10/03/2026

New England asters are the glory of the fall garden. If your trees have brown leaves now, it's not fall color — it's a cry for help.