Tree of Heaven Removal in Lewiston, ID: Steps and Cost

A fast-growing tree by a fence or a shed in Lewiston, ID comes down to a chainsaw, and by the next summer a ring of shoots stands where one trunk was, some of them well out in the yard. That is tree of heaven. Clearing it takes a licensed applicator’s treatment in summer, a mulching pass about a month later and return visits for the root sprouts, and the clearing typically costs $1,500 to $2,500 an acre.

Why the Lewiston Valley Suits Tree of Heaven

Lewiston, ID holds Idaho’s lowest ground, and its dry slopes and roadsides suit tree of heaven. Tree of heaven tolerates drought lasting several months, grows in any soil texture, including poor and compacted ground, and is common on disturbed sites such as roadsides, alleys and fence rows. Its spreading roots let it take hold on steep slopes and even cliff faces, and in the Pacific Northwest it grows along waterways, including the banks of the Snake and Columbia rivers.

It is here, but not everywhere yet. Only a handful of tree of heaven records exist in Nez Perce, Lewis and Idaho counties so far, and it is the best reason to act early: a single tree with a few suckers is a small job, and the same tree left for a decade is a grove.

Is It a Noxious Weed in Idaho?

No. Idaho’s noxious weed rule, IDAPA 02.06.09, names the plants on the state’s noxious weed lists in Section 220, and Ailanthus is not among them. No state rule requires you to remove it.

What is on Idaho’s list often grows nearby. Rush skeletonweed and spotted knapweed are listed noxious weeds, and rush skeletonweed is the most widely recorded weed in Nez Perce County. The Nez Perce County Noxious Weed Department, at 3215 E. Main Street in Lewiston, helps landowners identify weeds and choose control methods, and it is a good first call if you are not sure what you are looking at.

How to Recognize It

Look for large compound leaves up to 3 feet long, with 15 to 41 leaflets and prominent glands on the back of each leaflet, and male flowers with a strong odor most people find unpleasant. Female trees hold clusters of winged, propeller-shaped seeds, often through the winter. A mature tree may reach 60 to 70 feet.

Two quick checks settle it. The native lookalikes all have toothed leaflets, while tree of heaven’s are smooth, and its crushed leaves and broken twigs give off a foul smell no lookalike shares.

How One Tree Becomes a Thicket

By seed. One tree can shed more than 325,000 seeds a year. The winged seeds ride the wind. The seeds do not last long in the soil, though: they stay dormant less than a year, so the plant builds no lasting seed bank. Once the seed trees are gone, the supply of new seedlings dries up quickly.

By root, which matters more. Sprouting is the plant’s most common way to reproduce. Its roots are shallow and wide, and root sprouts can come up 50 to 90 feet from the parent stem; one plant spreading this way may occupy more than an acre. In dry, rocky soil it sends out long horizontal roots that do not branch until they find better ground.

Into things you own. The same roots can stop up sewer lines, invade wells and damage foundations. A tree beside a house, a septic line or a well is worth dealing with sooner.

What Happens When You Cut Tree of Heaven Down

It comes back, and usually thicker. Death or injury of the main stem usually results in prolific root sprouting, and cutting without further treatment is not recommended because it promotes sprouting and may increase the plant’s abundance. The tree answers a saw with large numbers of stump sprouts and root suckers.

Cutting alone can produce abundant stump sprouts and root suckers, which is why treatment comes before the clearing pass.

Can it be done without herbicide? Only by repeated cutting of every sprout, which usually takes at least five years unless the site is heavily shaded. Digging out the roots stops the sprouting but is impractical on most sites, because even a small root fragment can sprout. Grubbing can work on saplings. For anything larger, most owners find the treatment step is what makes the clearing last.

A Removal Order for a Lewiston, ID Property

1. Find every stem. Walk the lot and well past it, since sprouts can surface 50 to 90 feet from a trunk. Mark the seed trees and flag the trees and shrubs you want kept. Wear gloves: the sap causes a skin reaction in some people.
2. Have the trees treated first. A licensed applicator, arranged by you, does this step and follows the product label; our crew does not apply herbicide. The treatment window runs from 1 July to the first fall color.
3. Wait, then mulch. Treated trees need about 30 days to show symptoms before cutting. Our crew then fells the larger stems and grinds the trees, saplings and brush where they stand, working around every flagged tree. The chips stay on the ground. Nothing is piled, which matters here: open burning is prohibited inside Lewiston city limits, and outside cities burning slash needs a permit through 20 October.
4. Work the slope from safe footing. On a terrace break or a draw, the machine works from where the ground is firm, often along the top. Any part too steep to work safely is left out of the quote or handled another way, and you know that before the day starts.
5. Come back for the suckers. Expect shoots the next growing season from roots the treatment missed. A return visit cuts and mulches them, with the applicator retreating where needed.
6. Cover the ground and keep checking. Tree of heaven seedlings do not tolerate deep shade, and a thick cover of native trees or grass helps keep it out. Ground left bare also invites rush skeletonweed and knapweed, so plan seeding or weed control with the county’s advice, and look over the site each summer for a few years.

Pro tip: The treatment window opens on 1 July, so the mulching usually lands in August or later. Book the applicator and the clearing at the same time so the month between them is planned, not lost.

What Tree of Heaven Clearing Costs

Clearing tree of heaven and the brush around it usually runs $1,500 to $2,500 an acre, the hillside and draw brush row on our Lewiston pricing page. A dense grove of larger stems prices as forestry mulching at $1,500 to $4,000 an acre, and taking a whole parcel to an agreed finish can run to $4,500.

Tree of heaven work	Cost	Notes
Trees and suckers along a fence, a draw or a lot edge	$1,500 – $2,500 per acre	Narrow strips priced by the share of an acre they cover
A dense grove of larger stems	$1,500 – $4,000 per acre	The forestry mulching band
One tree and its suckers beside a house or shed	Minimum charge of about $1,500	Where small jobs start; charged in place of an acre rate, not added to one
A return visit for root sprouts	Priced per visit	Its own line on the quote; you choose whether to book it
Treatment of trees and sprouts	Priced by the applicator	Herbicide is the applicator’s work, not ours

On each visit, stems, brush and stumps become mulch on site, stumps finish flush with the ground and nothing is hauled away. Full stump removal below grade, and cutting and hauling a very large tree near a house, are discussed and priced in the quote. Grading is not part of our price: we clear to the ground so a builder can grade.

What moves a job inside its band is the number of stems, how far the suckers have spread, the trees we work around, the slope and the access. Our Lewiston forestry mulching cost guide covers how slope and the fire zones around a house shape a clearing budget.

Tree of Heaven Elsewhere in Idaho

Tree of heaven turns up in the Treasure Valley too, in Ada and Canyon counties. The order of work is the same anywhere in the state: treat, wait, mulch, return. Owners around Meridian, Nampa or Caldwell can see our Meridian land clearing page, and the state’s burn season, timber paperwork and stormwater rules are in our Idaho land clearing cost guide.

Frequently Asked Questions

What happens if you cut down a tree of heaven?

It sends up stump sprouts and root suckers, often more stems than before. Cutting alone is not recommended; a licensed applicator’s treatment first, then cutting about a month later, holds far better.

How deep are tree of heaven roots?

Mostly shallow but wide. Young trees have a taproot that fades with age, and the lateral roots can send up sprouts 50 to 90 feet from the trunk, which is why one tree turns into a patch.

Is there a way to get rid of tree of heaven without herbicide?

Only by cutting every sprout again and again, usually for at least five years. Digging out the roots works for saplings but is impractical for an established tree.

What does tree of heaven removal cost around Lewiston, ID?

Most stands clear at $1,500 to $2,500 an acre, and dense groves at $1,500 to $4,000. Small jobs start at the minimum charge of about $1,500, return visits are priced per visit, and the applicator prices the treatment.

Request a Tree of Heaven Clearing Quote

Request a free quote and we’ll contact you to discuss your property, access and the clearing you need. The quote lays out tree of heaven work as it really happens: the mulching pass after treatment and any return visit, each as its own line.

Read more: towns, soils and local rules on our Lewiston land clearing page.