Goats vs forestry mulching vs herbicide: brush control in WNC

Six acres of old pasture above Marshall, closed over with multiflora rose and privet, a few 10-foot autumn olives, and a creek on the low side. The owner has three quotes on the table: a goat outfit, a mulcher, and a spray contractor. Each one is right about something.

Goats eat leaves. Machines eat stems. Herbicide kills roots. Pick by what the lot needs killed.

What do goats do to WNC brush?

They kill it by starvation, slowly, and the best evidence is 30 miles from Asheville. NC State ran a four-season study at the NCDA&CS Mountain Research Station in Waynesville on a 5.9 hectare orchard left untouched for 15 years, on Hayesville loam with slopes of 15 to 60 percent. Paddocks were grazed by goats alone at 30 mature does per hectare, about 12 per acre, or by goats with cattle at 17 does per hectare plus two to three steers, about 7 does and a steer per acre, from 1991 through 1994. Each paddock was fenced with six strands of electrified high tensile wire. Water came from tubs gravity-fed off a tank on a tractor-pulled wagon.

Multiflora rose bushes were practically eliminated. Average height fell from 2.1 meters to 0.6 meters, and dead canes reached 100 percent in the goat paddocks and 92 percent in the goat-plus-cattle paddocks. Herbaceous ground cover rose from 65 to 86 percent under goats alone while the ungrazed control fell from 70 to 22 percent as brush closed the canopy. Grazing ran 45 to 60 days from May to July and another 24 to 35 days in September and October each year.

The USDA NRCS prescribed grazing sheet gives the working numbers: 8 to 12 goats per acre for brush eradication over 2 to 3 years, stocked to reach 80 percent defoliation in 7 to 14 days, then rotated and brought back as the leaves regrow. It cites the North Carolina data on multiflora rose defoliated at 4 to 8 week intervals from May: 21 percent dead by the start of year two, 78 percent by year three, 94 percent by year four.

What goats don’t do is take down a mature stem. The USDA Forest Service fuelbreak report quotes South African experience that goats can’t destroy mature brush without damage to the site, but they can check reversion after an initial clearing. It also warns that rough, steep, rocky terrain takes a toll on herders, dogs, and horses, and it suggests a minimum 48-inch fence. Brush control for cattle pastures covers the co-grazing side.

What does a forestry mulcher do that goats can’t?

It removes the standing wood in one pass and leaves the roots. MulchDeck’s rate table puts a mid-size machine at 1 to 2 acres a day in medium brush and 0.5 to 1 acre in heavy brush and small trees on walkable ground, with slopes and rock cutting that further. Fecon sorts heads by stem size: standard-flow carriers handle saplings to about 4 inches, high-flow units the 6 to 8 inch range, and extra-high-flow carriers reach into 10-inch material.

On the Marshall pasture that means the 10-foot autumn olives, the privet trunks, and the rose thickets are gone in about a week, and the chip blanket is holding the slope above the creek. Multiflora rose crowns, privet stumps, and any tree of heaven roots are still alive under the chips. What forestry mulching is covers the pass. Spring regrowth control covers what comes up in June.

Subsoil mulching drops the head below grade and grinds the stump and upper root mass. It cuts resprout without spraying and is the method next to water. It’s slower than a surface pass and it hates rock.

Near the creek the machine stops at the buffer. Designated trout waters in Madison, Buncombe, Henderson, Transylvania, and Haywood carry a 25 ft undisturbed buffer from the top of bank. Goats can browse inside a fenced buffer without disturbing soil. A mulcher can’t.

What are the herbicide rules in North Carolina?

Anyone applying pesticides for compensation on someone else’s property holds an NCDA&CS Commercial Ground Applicator license, with a five-year certification and annual renewal, in the categories that match the work. That’s the state’s own definition on its license page, and landscapers and farm contractors are its examples. A landowner treating restricted-use products on land he owns or leases to produce an agricultural commodity holds a Private Pesticide Applicator certification instead. Most over-the-counter brush killers need neither on your own ground, and the label is the law either way.

Water changes the category. Applying pesticides on purpose to standing or running water, ponds, lakes, and streams, is Aquatic Pest Control, category A. Foliar spray that drifts into a creek is a label violation before it’s anything else. On the Marshall lot the creek side gets cut and stump-treated by hand or gets the subsoil head, and the sprayer stays on the upper field.

Duke Energy’s rights of way FAQ is a useful model of how a big operator uses chemistry on brush: foliar, stump, stem, and vine applications after mowing, aimed at tall-growing woody species and leaving low-growing plants alone, with aerial application on rough, hard-to-reach mountain ground. Cut first, treat the regrowth, spare what you want to keep. Invasive species removal follows the same sequence on a private lot.

Which one fits the lot?

The pattern for most WNC pasture reclamation is mulch, then graze or hog, then spot-treat. The machine opens the ground in year one. Goats or a bush hog defoliate the regrowth on the 4 to 8 week cycle that drains roots. A licensed applicator treats the survivors, especially tree of heaven, where cutting alone makes it worse. Pasture reclamation walks the whole sequence.

When do goats win outright?

When the brush is already under the browse line, the land is too steep or too wet for tracks, and the owner has years. A fenced hollow above Waynesville, NC with knee-high rose and no access road is goat ground. The study that proves it was run 10 minutes from town.

When the brush is over your head, the season is short, or a septic field and a pad are waiting on the lot, the machine wins and goats become the maintenance. Autumn olive and multiflora rose covers the shrub pair. Forestry mulching and brush clearing are the two machine passes. On a Marshall, NC lot, check the tallest stem, the grade, the creek, and how many summers you’re willing to spend. See more in the guides library.