Everything a western Montana property owner needs to know about trees

How to care for ponderosa pine in the Missoula and Bitterroot valleys: normal needle shed, drought and beetle stress, watering, limb pruning and spacing.

Why Douglas-fir turn red in western Montana: Douglas-fir beetle, root disease, needle diseases and drought, and when a fir near a house is a concern.

Western larch (tamarack) drops every needle each fall in Montana. How to tell a healthy bare larch from a dying one, and what casebearer and needle cast do.

Black cottonwood along Montana rivers and in yards: fast growth, limb drop, decay, cotton, roots and life span, and when removal is the honest answer.

Why aspens struggle in Montana valley yards: suckers, short life, cankers, leaf spots, borers and deer and elk damage, and when to replace the tree.

Why Colorado blue spruce thin out in Montana yards: needle cast, cytospora canker, spider mites, drought and crowding, and whether the tree can be saved.

Has emerald ash borer reached Montana? What MSU Extension and state agencies say as of October 2026, the signs to watch for, and what ash owners should do now.

Why so many Missoula street trees are Norway maples reaching the end of their lives, what the City's urban forest plan says, and what it means for homeowners.

Eleven trees that do well in Missoula and the Bitterroot, with mature size, water needs and the catch for each, drawn from the city's approved tree list.

How to spot a tree in slow decline in western Montana: dieback, thinning, needle browning, cankers, beetles and root problems, and what causes each.

Brown pine needles in western Montana: how to tell normal fall shed from winter burn, drought, bark beetles, needle disease, salt and root trouble.

Identify, prevent, and treat mountain pine beetle in Montana. Warning signs in ponderosa and lodgepole pines.

Why green pine slash left on the ground at the wrong time breeds Ips beetles that kill standing pines, and how to time pruning and thinning in Montana.

Brown, chewed branch tips on a Douglas-fir or spruce in western Montana? How to spot western spruce budworm, whether trees recover, and options for yard trees.

How to recognize fire blight on Bitterroot Valley fruit trees, how it spreads, when and how far back to prune, and where to find MSU's variety ratings.

Dutch elm disease is in Montana. How to spot flagging in an elm, how beetles and root grafts spread it, when to prune elms, and what happens to a sick tree.

Why maples, aspens and birches turn yellow with green veins in Montana soils, what soil pH has to do with it, which fixes help, and what to plant instead.

How lawn and pasture herbicides injure trees in Montana: cupped and twisted leaves, drift, soil uptake, what MSU Extension advises, and how to avoid it.

Browsing and antler rub on yard and orchard trees in western Montana: what it looks like, which trees get hit, fencing and trunk guards, and recovery.

A month-by-month pruning calendar for western Montana trees: pines, aspens, spruce, and fruit trees.

A spring walk-around for western Montana trees: snow breakage, winter burn, vole and deer damage, what to prune now, mulch, watering and when to call.

How much and how often to water established and new trees in western Montana, where to put the water, drought signs, and fall and winter watering.

Prepare your Montana property for wind and ice storms: tree risk, debris, power lines, and storm response.

Protect your Montana trees from snow and ice load: spot at-risk limbs and prevent breakage before winter.

Why ponderosas drop needles each fall, whether needles hurt lawns or acidify soil, why they matter near the house, and when to clear them.

When to plant in western Montana, how wide and deep to dig, finding the root flare, staking, mulch, first-year watering and the mistakes that kill new trees.

Why topping harms trees, what happens in the years after, and the alternatives for western Montana yards: crown reduction, thinning, windowing or replacement.

What tree cabling and bracing are, which defects they address, how steel and dynamic systems differ, inspection needs, and when removal is the better answer.

What tree roots really do to foundations, sewer lines, septic drainfields and sidewalks in western Montana, how much root can be cut, and when removal fits.

Building, trenching, grading or paving near trees in western Montana? Where roots are, what kills them, and how to protect trees before work starts.

Boulevard trees between the sidewalk and curb are city property in Missoula. What that means for pruning, removal, planting permits, and storm damage.

What Hamilton and Stevensville publish about boulevard and street trees: who maintains them, when a permit is needed, topping rules and tree boards.

Who trims trees near power lines in the Missoula and Bitterroot valleys, per NorthWestern Energy, Missoula Electric and Ravalli Electric's own pages.

Burn permits and seasons for limbs and slash in Missoula and Ravalli counties, how to check if burning is allowed today, and the alternatives to a burn pile.

Create defensible space around your Montana home with wildfire-smart landscaping: zones, plant choices, and tree care.

Overhanging branches, boundary trees and a neighbor's tree that falls: what Montana law and a Montana Supreme Court case say, in plain terms.

The first steps when a tree lands on a house, car, fence or driveway in western Montana, and how homeowners insurance generally treats tree damage.

Keep the logs, keep the chips or have it all hauled? Which Montana species burn well, how long to season firewood, and why firewood should stay local.