These Are the Best Weeding Tools, From Roundup to Flame Thrower

New York Times

17-07-2025

If you were to sketch a yard designed for testing weed-control methods, it might look a lot like mine. My yard is in New Jersey, with a temperate climate (plenty of sunshine, plenty of rain, rarely blazing, rarely arctic). The soil is a type called Downer (the official soil of New Jersey), and it's productive stuff, earning the Garden State its nickname.
The lot is oriented northeast-southwest, so some areas receive full sun all day and some areas get shade in the morning or afternoon. And, thanks to three huge walnut trees, some areas are dark and dank for the entirety of the growing season. Whatever conditions a plant prefers, it can find them here.
The yard has not been tended in a long time, and 'volunteers' (gardener-speak for stuff you didn't plant and may not want) have taken hold. When the weather turns warm in the spring, whole sections of it sprout monocultures of creeping Charlie and purple dead nettle. The fences disappear behind walls of English ivy. Bumper crops of Asiatic dayflower and Asiatic smartweed grow in the raised beds. Broadleaf plantains and common dandelions march across the grassy sections like spear bearers. All of these things are non-native, and some of them are invasive (that means they're non-native and also harmful, crowding out native plants or otherwise disrupting ecosystems). This poison ivy vine was about 2 inches across and had climbed 30 feet up a tree. I treated it once with Roundup Weed & Grass Killer, and it never came back. Tim Heffernan/NYT Wirecutter
Getting rid of them piecemeal would be the work of a lifetime, which is why I'm planning to kill everything and start over. My short-term goal was to get the worst of the weeds under control, make the property less of an eyesore, and maybe even make the yard pleasant to hang out in.
State-school agricultural extensions proved to be a goldmine of advice. And I would encourage you to explore yours: It may identify locally problematic species or raise other concerns specific to where you live. In addition, I found North Carolina State University Extension's article Are There Alternatives to Glyphosate for Weed Control in Landscapes? to be a gem of clarity and concision. And it's a great general-purpose primer on glyphosate (which you may know as Roundup), other herbicides, non-herbicidal control methods, and the plants and situations they're most effective at addressing. The article A Guide to Weed Life Cycles, from UMass Amherst's Extension Turf Program, is also terrific, and it explains how to identify the different classes of weeds and why managing them requires different approaches.
Then I gathered some equipment. I already had a transplanting spade (even before I wrote our guide to them), and I don't think there's a better tool for uprooting shrubs and trees. I also had our top-pick string trimmer and a hori-hori (a digging knife with a dozen uses, including weed removal). To these I added a couple of weed-pulling tools: a propane blowtorch; the first gallon of Roundup I've ever bought (as fraught a moment as ordering my first legal-age beer); and several herbicides that fall under the Environmental Protection Agency's 25(b) 'minimum risk' exemption from FIFRA registration. I added a spray bottle for general Roundup application and a couple of small applicators for daubing it on freshly cut stumps.
They mostly proved effective at the different jobs for which they're intended, and this provided my first take-away: You'll get the best results if you keep multiple weed-fighting tools on hand.
Connie Park/NYT Wirecutter
The trademarked name Roundup is often used interchangeably with glyphosate, a powerful and controversial herbicide that Monsanto patented and began selling under the Roundup name in 1974. (Monsanto's exclusive right to sell glyphosate in the US expired in 2000, and then many other companies began using it in their formulas.) But as of 2024, no Roundup residential lawn-and-garden products contain glyphosate, including the basic Weed & Grass Killer that I used.
This basic herbicide rapidly kills most plants, and it degrades quickly, allowing replanting within days or weeks.
Roundup Weed & Grass Killer now contains three active ingredients. Triclopyr triethylamine salt (TEA) is what's called a systemic herbicide. Herbicides of this type get absorbed by the plants they're used on and spread to all of the plants' tissues, killing them down to the roots. TEA is also what's called a selective herbicide, which means it's most effective on certain kinds of plants — in TEA's case, woody plants and vines. It's applied to cut stumps to prevent regrowth (and it's frequently used to combat invasive species).
TEA specifically works by mimicking an auxin, a plant growth hormone, triggering uncontrolled growth that kills treated plants within days or weeks. The EPA considers TEA slightly toxic to humans, not classifiable as a human carcinogen, practically nontoxic to slightly toxic to birds and marine/estuarine invertebrates, and practically nontoxic to fish and freshwater invertebrates. It is degraded by soil microbes within a few weeks.
Fluazifop-p-butyl is a selective, systemic herbicide that's used mainly to kill grasses, and it's not effective on broad-leaved plants. It works by inhibiting lipid (fat and oil) synthesis, and that leads to the breakdown of cell membranes. The EPA considers it of low acute toxicity and unlikely to be carcinogenic to humans. It is degraded by microbes in the soil, and it does not travel well through soil, though the EPA notes that using both fluazifop-p-butyl and triclopyr 'in areas where soil is permeable, particularly where the water table is shallow, may result in groundwater contamination.' Like TEA, fluazifop-p-butyl is frequently used to combat invasives.
Diquat dibromide kills by disrupting plants' cell membranes. It's non-systemic, which means it kills only the parts of a plant that it touches. And it's non-selective, which means it's effective on almost all plant types. The EPA considers it non-carcinogenic, of low oral toxicity, and of moderate to severe acute dermal toxicity to humans. It does not migrate through soil, and it's unlikely to get into surface and groundwater.
Taken together, this mixture makes the Weed & Grass Killer a broadly effective herbicide in yards and gardens, and one that's quite safe to use and does not persist in the environment. (This allows for replanting of treated areas in as little as a day.)
Still, I have qualms about using pesticides in general, and when I do, I make an effort to use as little as possible.
In spring 2025, I tried three herbicides — from Sunday and Procter & Gamble — that are heavily marketed as being safer or greener alternatives to traditional formulas. Before using them in my yard, I spoke at length with Trent Lewis, Sunday's co-founder and head of R&D, and Mary Jane Watson, research and development senior scientist at Procter & Gamble.
Sunday's Dandelion Doom uses chelated iron (iron HEDTA) to induce fatal iron toxicity in broad-leaved plants. Iron HEDTA is used extensively as a supplemental fertilizer (all photosynthetic plants need some iron), and using it as an herbicide is effectively a matter of vastly over-fertilizing. The EPA has found no reports of adverse effects from exposure to iron HEDTA, and it says that 'pesticidal usage of this biochemical will not have any harmful environmental effects.'
Sunday's Weed Warrior is an ammoniated soap. Herbicidal soaps kill by disrupting the protective waxy coating on leaves and damaging leaf-cell walls; this leads to desiccation and cell death. I reviewed the Safety Data Sheets of several widely available brands, including Weed Warrior, and the warnings are that they can irritate the eyes, skin, or lungs and should not be swallowed; these warnings are similar to the warnings on dishwashing soap.
Procter & Gamble's Spruce meets the EPA's 25(b) 'minimum risk' conditions. Essentially, this means a pesticide can contain only active ingredients that the EPA believes 'pose little to no risk to human health or the environment,' and in fact many of those ingredients are widely used in food and cosmetic products. Spruce's active ingredients are sodium lauryl sulfate (a surfactant found in a lot of soaps and shampoos), geraniol (geranium essential oil), and cornmint oil. Putting aside all other considerations, it smells delicious. (That wasn't a given. The complete list of 25(b) active ingredients includes dried blood and 'putrescent whole egg solids.')
I didn't find any of them as effective as the Roundup. Neither did Wirecutter's Sebastian Compagnucci, an avid gardener who optimizes his weeding practices.
This was largely expected: They are not systemic herbicides, which are absorbed into and kill every part of a plant. As both Lewis and Watson noted, that means treated plants' roots can and often do survive and regrow.
It typically took two applications of the Sunday and Spruce products to kill the aboveground parts of the grasses, dandelions, and other weeds I used them on. Also, for the products to be the most effective, the plants have to be thoroughly drenched — not just lightly sprayed or wetted with a drop or two. So I wound up using a lot more of the Sunday and Spruce products than I did of the Roundup.
Spruce comes in proprietary aerosol cans (they spray straight down), manual spray bottles, and jugs with built-in, battery-powered spray wands. Sunday's Weed Warrior and Dandelion Doom come in manual spray bottles and in jugs and pouches with battery-powered wands. Sunday sells refills for all of them, so you can reuse the original containers. But those wands aren't built to last, and the batteries will die. Spruce sells refills for its jugs and spray bottles but not for the aerosol cans, and its battery-powered wands aren't built to last, either. The incongruity between these 'earth-friendly' herbicides and all of that material waste struck both Seb and me.
All told, I'm happier using tiny, targeted amounts of the Roundup Weed & Grass Killer and durable applicators of my own choosing. And I don't plan to keep using Sunday or Spruce after the batches we ordered run out. But I absolutely acknowledge their virtues, too.
Connie Park/NYT Wirecutter
If you've watched more than a couple of YouTube videos about gardening, I suspect you've gotten ads for Grampa's Weeder. It's pitched as an Olde Tyme secret weapon against unwanted grasses and broad-leaved lawn invaders like dandelions.
Given my target-rich environment, I had to try it out. I also tried a similar tool made by Fiskars.
This simple tool is an ace at pulling up deep-rooted lawn weeds like dandelions, but it's ineffective on other intruders and in rocky soil.
On my dandelions and plantains, Grampa's Weeder and the Fiskars tool both performed as advertised, usually managing to pull out most of the taproots along with the foliage and thus killing the individual plant. (If you don't remove the taproots, a plant will just grow back.) Both the Grampa's Weeder and the Fiskars (shown) are adept at pulling out dandelions, taproots and all. Tim Heffernan/NYT Wirecutter
Conveniently, you don't have to lean down or get on your knees to use either tool, the way you do with a traditional hand weeder. (You do have to use your foot to push them into the soil, however.) And they don't leave big holes in the lawn, the way a shovel or trowel can.
That said, they are one-trick ponies. Neither worked well on the little walnut sprouts, for example, because the flexible but tough stems prevented the tools' claws from centering on and gripping the roots. They're useless in rocky soil, too, because the claws can't penetrate.
I kept the Grampa's Weeder. It lacks the little ejector mechanism of the Fiskars weed puller, but I didn't find that to be much of a time-saver anyway. The simple bamboo-and-metal construction is sturdy, and it's comfortable to hold. And, above all, it's nearly silent. Using it became meditative after a while. The Fiskars weed puller, whose plastic parts never ceased clicking and clacking while I worked, became increasingly irritating to use. I think I'd find excuses to not use it, and that's how weeds take over.
Connie Park/NYT Wirecutter
Let's get one thing out of the way first: Flame weeding is not flamethrowing. Banish visions of Rambo torching the jungle from your mind.
Using targeted heat to kill weeds, though, is an established practice. Steam and hot-foam equipment is used by some professionals, but for homeowners, propane torches are the way to go.
For obvious reasons, they can't be used everywhere. They're intended for flame-resistant surfaces like concrete, asphalt, rock, and gravel — places where weeding by hand is difficult or impossible. The University of California's Agricultural and Natural Resources department has some additional guidelines on flame weeding safety, including advice on keeping extinguishing materials nearby and avoiding use in windy, dry, high fire-risk conditions.
I tested a popular torch made by Bernzomatic. It hooks up to a standard 16-ounce propane cylinder (available for about $10 at any hardware or outdoors store), so it's light enough to carry in one hand. It has a built-in manual igniter, and its long flame tube lets you stand upright while working.
This torch is lightweight, self-igniting, and long enough to use standing upright. It's a good (and satisfying) tool for controlling weeds on nonflammable surfaces.
The test area consisted of gravel-choked sidewalk cracks, which the dandelions and plantains consider an excellent place to raise children.
The Bernzomatic torch was easy to set up and made quick work of the weeding. After sweeping away any dead leaves and dry grass clippings with a push broom (to avoid unwanted flareups), I simply held the flame over each plant for a second or two — just long enough to make the foliage change to a slightly darker green. This indicates that the plant tissue has been heated enough to kill it; there's no need to burn the weeds to ashes. Seared to perfection. This picture was taken about 18 hours after I torched a strip of the driveway, but the plants actually withered within a few hours of being treated. Tim Heffernan/NYT Wirecutter
One thing to note: Torches destroy only above-ground foliage. That's usually enough to kill young weeds outright, per the North Carolina State Extension's guide to glyphosate alternatives, but you usually have to go back and hit mature plants again. Drawing on energy stored in their roots, they can come back several times before their reserves are used up.
Like weed pullers, weed torches are essentially one-trick ponies. You should not use them on lawns or in brush (a fire danger), and the flame isn't precise enough to target individual weeds within a crowded garden bed. With care, they can be used in open beds, but if the beds are mulched, make sure that the mulch is properly soaked before you light up.
However, people do use weed torches for a few non-gardening purposes, like igniting brush piles and melting ice on sidewalks. There are more efficient ways to do both, but there's something to be said for the fun of wielding the awesome power of fire in your very own hands.
None of the above options are ideal for use in vegetable gardens and flowerbeds. And Roundup should never be used anywhere you'll be planting food crops — not even to kill weeds beforehand. Try a stirrup hoe instead. Wirecutter's Sebastian Compagnucci got his stirrup hoe during the pandemic, when his garden became a refuge, and due to this tool's precise, efficient action, his weeding time was cut in half.
For uprooting unwanted shrubs and small trees, I've never found a better tool than a transplanting spade. As the name suggests, this tool is also ideal for transplanting (or simply planting) things. And due to its short handles, a transplanting spade is much more maneuverable in the confines of a yard than a standard shovel.
A hori-hori is one of our favorite gardening tools. Shaped like a short sword but dished like a trowel, it's great for digging out deep-rooted weeds that are growing close to plants you want to keep. In my raised beds, I found my hori-hori more effective than the weed pullers, which tended to sink into the soft soil and didn't get enough leverage to work properly.
A string trimmer can keep weeds knocked down, and it can give desirable plants time to grow and eventually crowd out the weeds for good. I also use mine as a makeshift edger.
All this said, now that I've gotten our weed situation under a modicum of control, I find myself frequently turning to the simplest tool of all: my own hands. It really doesn't take long to yank the weeds out of a patch of lawn or the corner of a raised bed. And this approach somehow seems more fair. The plants we call weeds are some of the great survivors and settlers of the living world. The least I can do is give them an honest fight.
This article was edited by Jen Gushue and Harry Sawyers.