10/25/2026
🌳 TREE SPOTLIGHT: GREEN ASH
Last week, we talked about Caragana, one of Sheridan County’s toughest shrubs.
This week, we’re highlighting another longtime favorite: Green Ash!
If you’ve lived in northeastern Montana for very long, you’ve probably seen plenty of green ash. These trees have been planted in shelterbelts, farmyards, and around homes for generations—and for good reason.
Green ash is native to our region and has proven to be hardy and adaptable. It can handle cold winters, prairie winds, and a variety of soil conditions.
It has also provided reliable shade and wind protection in our challenging climate.
🌿 A few interesting facts about Green Ash:
🍃 Under favorable conditions, green ash can grow 40–60 feet tall, although trees in our area are often smaller.
🍃 It grows relatively quickly compared to many other trees suited to northeastern Montana.
🍃 It provides shade, wildlife habitat, and wind protection.
🍃 Its leaves turn a beautiful golden yellow in the fall.
🍃 Many mature green ash trees today were planted decades ago through shelterbelt and conservation efforts.
So, if green ash grows so well here, why aren’t we encouraging people to plant more of it?
The biggest concern is the emerald ash borer (EAB)—an invasive insect that attacks and kills ash trees. It has already destroyed millions of ash trees across North America.
Green ash has served our area well. However, planting more of it today could leave future shelterbelts vulnerable to the same threat.
We’re also seeing many older shelterbelts throughout Sheridan County begin to decline. Some have protected homes, livestock, and fields for 50 years or more!
That’s why it’s important to start thinking about the next generation of shelterbelts.
Planting a variety of suitable species, instead of relying heavily on one type of tree, can help create healthier and more resilient windbreaks.
The trees planted by previous generations have served us well. Now it’s our turn to plan for the generations that follow. 🌱
🌳 Tree orders are now open!
If you have an aging shelterbelt or are considering planting a new one, contact or stop by the Sheridan County Conservation District. We’d be happy to discuss your options and our 50/50 Tree Planting Cost-Share Program.
And we’re curious: Do you have green ash growing on your property? How are your older trees holding up?