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Get this: If you eliminate weeds in the first four weeks of life, you鈥檒l also stop weeds from removing vital nutrients from the soil. Plus, think of how much time you鈥檒l save over the gardening season! Here are 12 ways to kill weeds naturally in your garden.
1. Mulch Over Them
Use mulch (shredded leaves, brown cardboard, straw, or wood chips) to cover the soil around your plants! This covering blocks weed seeds from sunlight so they don鈥檛 germinate, inhibits growth underneath itself, and retains moisture. Mulch also provides needed nutrients as it decomposes over time and moderates soil temperatures.
Cover the soil between your plants and along rows with a layer of mulch to prevent weeds from growing. We recommend a layer that鈥檚 at least one inch thick.
Keep the mulch a few inches from the base of your plants to discourage insect invasions and prevent rot, too.
While we use organic mulch such as straw, there are also inorganic mulches, including black plastic and landscaping fabric.
Note: If you use leaf blowers, many come with shredders that can turn yard debris into garden mulch fast, which saves you the costs of making or buying your own mulch. See our mulching guide.
For persistent or numerous weeds, exclude light! Cover the soil with dampened newspaper (black ink only) or brown cardboard (with any tape removed). Then, cover that with 2 inches of straw or compost. This ensures that weeds don鈥檛 get the light they need to grow. Some persistent perennial weeds will still survive, but most will not grow through; hence, very little weeding is necessary. Plus, you鈥檒l save on water and have happy worms and soil.
This works best, of course, when you are starting a new garden bed or a new garden space. Watch Janice Stillman, editor of The Old Farmer鈥檚 蜜桃恋人, lay down a few layers of newspaper, wet it, add mulch on the edges, and dump compost on top of the newspaper bed! You鈥檒l love having almost no weeds to contend with, and as a bonus, it helps build the soil. It couldn鈥檛 get any easier than this.
3. Pull Them Out or Dig Them Up
You鈥檒l still need to pull out weeds during the season manually. It may not be your favorite chore, but it鈥檚 oddly therapeutic and almost meditative for some of us! Wear waterproof gloves and consider a comfortable kneeling pad or camp stool for extended weeding sessions.
Weeds will slide out of the soil easier when the soil is wet and the weeds are young.
The trick to pulling weeds is to get the root out as well, since many common weeds鈥攍ike dandelions鈥攚ill regrow from any roots left in the ground. Pull the weed from its base (close to the soil line) and twist gently to dislodge the roots. If you accidentally snap the roots off, try using a fork to gently pry the rest of the plant out of the ground, roots and all.
If your weeds regrow, then you have a persistent root that you need to dig out. Use a spade or digging fork to dig up persistent weeds by the roots. Remove as many root pieces as you can.
While weeding, try to hold the trowel vertically (like a child holding a crayon) to eliminate strain on your wrist.
Here are a few common weeds and the best ways to remove them:
Common Weeds and Treatments
Weed
Image
Treatment
Buckhorn Plantain
Dig out before it flowers.
Bull Thistle
Pull or cultivate out before it produces seeds. Be sure to wear gloves!
Common Burdock
Dig or pull out before it produces seeds. Be sure to get the whole root.
While some folks turn to dangerous chemicals, many weeds are resistant to herbicides and respond better to different methods of control. See 5 natural 鈥渨eed killers鈥 to get rid of competing plants while still keeping people, pets, wildlife, and waterways safe.
5. Hoe Them Down
When weeds have really sprung into action, nothing beats a good old-fashioned garden hoe with a long handle. Hoeing is best done in the morning when the soil is dry. The weeds will cut cleanly from the soil, creating a 鈥渄ust mulch,鈥 which inhibits the germination of new weeds. You can let the weeds dry in the sun during the day and then take them to the compost heap.
Make quick work of gliding through and getting to hard-to-reach spots. It鈥檚 especially useful early in the season. Once a week, even if there aren鈥檛 many weeds, quickly go over the surface and keep the soil moving. Over time, there won鈥檛 be many weeds left.
6. Minimize Soil Disruption
If you hoe, do not overturn the soil or dig down below the surface (no dig). We don鈥檛 want to expose the dormant weed seeds to light and air, which will only bring them back to the surface.
Some folks say it helps to weed at night! No kidding. Research indicates that weeds may be stimulated to grow by a sudden flash of light, which is what you give them when you turn the soil over during the day. A German study concluded that by turning the soil at night, weed germination could be reduced by as much as 78 percent! You can try this method by working under a full Moon, or at dawn or dusk.
7. Chop Off Their Heads!
If dealing with weeds is too much of a hassle, at least resolve to keep them from setting seed. Once a week, use a grass whip or string trimmer and cut off their heads before they flower.
8. Keep Your Garden Edges Trimmed
Have you ever noticed many weeds collect at the edges of your yard or garden? Keep your grass and garden edges trimmed to reduce weed invasions in your fertile garden soil. The places to watch are not only the edges of your lawn but also around posts and fence lines and close to planting beds. Another idea is to grow perennials or ground roses that will shade those edges and make it easier for you!
9. Aerate Your Soil
Some types of weeds, especially those with deep roots, grow well because the soil is compacted. The plant鈥檚 roots aren鈥檛 getting the air, water, and nutrients they need, so the weeds start to take over. If you rent an aerator from your local home improvement store, you鈥檒l be amazed at how providing annual aeration will reduce the amount of deep-rooted weeds.
10. Reduce Open Garden Space
If your soil is rich and drains well, plant your plants closer together. This will cut down weed growth. Start your warm-weather plants as soon as possible to keep the soil from being bare for too long. At the end of the season, plant cover crops such as ryegrass, winter wheat, or oats to prevent weeds from finding a home in your garden.
11. Avoid Watering Weeds
If you can water only the plants that need it, you may avoid cultivating weeds in unplanted areas, paths, and areas where they are not welcome鈥攁nd where they would dry up if not watered!
12. Let Them Grow 鈥 Temporarily
Encourage weeds to grow before you plant your garden. Lay sheets of clear plastic over your garden in early spring to warm the soil and encourage weeds to germinate. Once the weeds are several inches above the soil, pull or hoe them out. Then, plant your own crops.
Bonus: Eat Them!
Yes, some weeds鈥攍amb鈥檚 quarters, amaranth, purslane, and others鈥攁re ediblewhen young and tender! Instead of destroying them, consider cultivation!
Cover Crops in Fall/Winter
Also, at the end of the season, after you harvest your veggies, plant cover crops like wheat, clover, and barley. They are beneficial plants that give back to the soil but keep weeds from growing and soil erosion from occurring. In some situations, you can use a cover crop in the shoulder seasons to block out weeds. See our list of cover crops.
Expert Video: Easy Weeding
In this video, we demonstrate some weeding techniques and explain which methods work best for different types of weeds. We also discuss how to use mulches and weed barriers for future protection.
Know Your Enemy
Above all, knowing how to identify the most invasive and destructive weeds is key to keeping your garden defended from weeds. Check out our list of common weeds to help identify what鈥檚 growing in your garden and learn how best to get rid of it.
Do you have any tried and true tips for weed removal? Tell us about them in the comments!
Catherine Boeckmann loves nature, stargazing, and gardening so it鈥檚 not surprising that she and The Old Farmer鈥檚 蜜桃恋人 found each other. She leads digital content for the 蜜桃恋人 website, and is also a certified master gardener in the state of Indiana. Read More from Catherine Boeckmann
I have just moved into an old townhouse where the garden is bloated with old roots from bygone flowers. It is near impossible to dig in the soil because of these old roots (not tree but flowers. Anything I can do not too labour intensive to free up the soil??
You must be dealing with perennials. (Annuals would not鈥攕o far as we know/have experienced鈥攑resent any kind of challenge like this. But there is always a first time!) Assuming that these are perennials, you really just need to get in there and work it. The intensity of the labour is up to you, but here is something to consider: Many people find this kind of work quite gratifying. You will feel accomplished with every root you extrude, pleased with every inch of your project, and ultimately proud to say that you did it yourself. (For heaven’s sake, take 鈥渂efore鈥 pics before you get started鈥攁nd, for that matter, document your progress!) Set yourself an area/space goal; don’t try to do it all at once. And consider too that in the fall many plants prepare for their winter dormancy period and 鈥渞elax鈥 their roots, making them easier to pull out. Your plants are now in growth stage, even if鈥攇uessing鈥攖hey are too crowded to put on their best show.
If you bring in heavy equipment to tear through the soil, you may be spreading some roots around … and some just might take hold where you least expect and want them.
The other alternative is to pay someone. So give it a go…a little at a time and more in the fall.
Have a corral full of what is known in Alberta as "wild tomatoes". What will kill these plants as the cattle are not eating them. I believe they have not produced tomatoes as yet.
My garden area is a solid grass/weed bed. Must till the area & break sod/weed filled ground. After this is done what is the best product to use to maintain a grass/weed free area. I want a safe product for my vegetable garden. The garden area has a rich soil & located in an area that I call bottom land.
In my flower bed, I have a weed that has little thorns on it. I have dug out the weed and still come back. I knew this weed as a jagger when I was little. The deer brought it in. How do I get rid of it?
Hi, Priscilla: Johnson grass is not an easy foe. Eradicating it requires assiduous effort on multiple fronts over a period time, and often painstaking, nitpicky work. The first thing to do is contact your local extension service for their advice, as "local" is always better (Texas A&M has one in Dallas). You will want to apply an herbicide (as eco-friendly as possible) according to directions and then remove the plants as best you can. You will also want to till or dig up the rhizomes (underground growths that produce new shoots) and dispose of them carefully. Rhizomes are usually limited to the top foot of soil, but can go down as deep as 2 feet. You will also want to make sure that any seeds that may be around are removed before they can spread. You will need to do each of these steps on a continual basis for at least one season, and by the way, make sure that none of your activity spreads the grass to your neighbors. Most important, you will need to be very, very vigilant. If at any time you think you see even the tiniest speck of something Johnson grass, you need to remove it. There is no such thing as "too small to matter." Good luck!
I live in California. I am struggling with Yellow Sorrel. I have sifted through the dirt 1 foot in depth, 3 times through my garden to pick out the bulbs. I mulched 4-5 inches of redwood mulch and the same weeds consumed my garden, even where I laid weed fabric covered with tightly set bricks. What else can I do?