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Using Baking Soda to Kill Weeds: a Natural and Effective Solution (2023)

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baking soda to kill weedThe early bird catches the worm. Those with green fingers know this to be true. Weeds are a constant problem in any garden, and can take up valuable space that could otherwise be used for healthier plants.

Baking soda is an effective, natural way of tackling these pesky weeds – it’s as simple as applying baking soda directly onto the weed! Read on to learn more about how using baking soda to kill weed can help you reclaim your garden.

Baking soda has many uses beyond our kitchens – from being an effective cleaner around the home or car, it also makes a great herbicide when used correctly outside too! A non-selective herbicide like sodium bicarbonate affects all types of vegetation; however, its environmental benefits make it perfect for those looking for sustainable solutions that don’t harm beneficial insects or local wildlife.

It requires no mixing and is easy to apply; plus we’ll compare various DIY methods so you can find out which one works best in keeping your lawn free from unwanted guests without damaging surrounding grasses too much either.

Key Takeaways

  • Baking soda is a natural and eco-friendly weed killer.
  • It disrupts weed growth by altering soil pH and drying out weed leaves.
  • Baking soda can be applied using a teaspoon for accurate and precise application.
  • It is important to avoid overuse of baking soda to protect soil health and to water treated areas after application.

Using Baking Soda to Kill Weeds

Using Baking Soda to Kill Weeds
You’ll need to thoroughly moisturize the weeds before generously sprinkling the powder on a hot, sunny day to activate it for removing the unwanted plants without harming the soil. Arm yourself with baking soda, a watering hose or can, teaspoon, and broom for an organic, non-toxic weed control session.

After a thorough soaking, apply one teaspoon of baking soda directly to each weed. Select a hot day over 85°F for activation and avoid overuse that may affect soil health.

Generously coat cracks and non-plant areas too, using the broom to sweep excess into crevices.

Follow up by watering treated zones with 1⁄2 to 1 inch of moisture, unless recent rainfall suffices.

Reapply baking soda as needed after 4-6 weeks for stubborn weeds.

This eco-friendly baking soda application naturally hinders weed growth without chemicals, preserving your soil for future cultivating.

Step-by-Step Guide to Using Baking Soda as a Weed Killer

Step-by-Step Guide to Using Baking Soda as a Weed Killer
To use baking soda as an effective weed killer, begin by thoroughly moistening the unwanted plants and surrounding areas. Next, apply 1 teaspoon of baking soda directly onto each weed, making sure to coat the leaves and stems.

Then, generously sprinkle baking soda into any non-planted cracks or crevices, using a broom to sweep it deep into the spaces. After application, give all treated zones about 1/2-1 inch of water to activate the baking soda, unless rain is expected soon.

You can reapply more baking soda after 4-6 weeks if the weeds are still thriving.

Equipment and Ingredients Needed

Grab a can or hose, teaspoon, and broom before heading out. Mix baking soda and water at a 1:1 ratio for maximum effectiveness. Apply directly to moistened weeds for best results. Use pure baking soda for spot treatment.

Equipment is simple; ingredients are safe. Becoming skilled at application allows freedom from weeds.

Step 1: Moisturize the Weeds

Soak those pesky weeds to the bone before baking soda application for best results. Fooling Mother Nature with a generous dousing softens rigid cellular walls, allowing complete sodium bicarbonate absorption for utter obliteration.

Step 2: Apply Baking Soda to the Weeds

Apply one teaspoon of baking soda per weed plant on sunny days for activation. Cover each weed thoroughly, but avoid overuse to prevent upsetting the soil balance. Dry baking soda activates in heat and light to disrupt weed growth. Reapply after rains wash away the powder.

Precision baking soda application maximizes weed prevention in your organic garden.

Step 3: Treat Other Infested Areas

Sprinkle baking soda generously in non-plant areas and sweep excess into cracks with a broom. Coating paved surfaces creates natural weed barriers to free your garden from invasive grasses. Alternative weed control tips like treating infested paths to be weed-free empower mastery over your outdoor space.

Step 4: Water the Weeds

Give ’em a good drenching with some H2O after treating those pesky weeds. Soaking the soil activates the baking soda, but don’t overdo it. Aim for 1⁄2 to 1 inch of water, unless it just rained. Moisture activates the soda to dry up them weeds.

Step 5: Reapply Baking Soda if Needed

Reapply the magic dust after a month or two if those pesky weeds are still alive! Nourishing your soil while battling weeds calls for periodic reapplications. Adjust the frequency based on the season and infestation level. Persistently pamper your plants with gentle, organic solutions.

Benefits of Using Baking Soda for Weed Control

Benefits of Using Baking Soda for Weed Control
You’ll love using baking soda as a natural and eco-friendly weed control method. This versatile household staple effectively controls weeds without harming the environment, and even helps deter insects and prevent plant diseases, unlike toxic commercial herbicides.

Baking soda is an excellent alternative to synthetic weed killers. It disrupts weed growth by increasing the pH and salinity of the soil, making it difficult for unwanted plants to absorb nutrients. Baking soda also dries out weed leaves. Regular applications will weaken and eventually kill persistent weeds.

Unlike harsh chemical herbicides that leach into groundwater and pose health risks, baking soda breaks down quickly into harmless compounds. It won’t harm lawns, gardens, pets or people. Baking soda even provides some benefits – it deters insect pests, fungus diseases, and deodorizes soils.

With some strategic applications throughout the growing season, baking soda can keep your landscape weed-free without nasty toxins. It’s inexpensive, readily available and easy to apply. Baking soda is a must-have for organic gardening and safe green weed control.

Environmental benefits of baking soda

Care for the environment profoundly by choosing baking soda’s gentle nature for your garden’s vitality.

  • Non-toxic and safe for people, pets, and wildlife.
  • Biodegradable and won’t linger in soil or waterways.
  • Neutralizes pH for improved soil health.
  • Naturally derived from mineral trona ore.
  • Cost-effective and easily accessible option.

Embrace baking soda’s eco-edge to nurture the interconnected web of life in your garden.

Versatility in weed control

You have non-toxic options for spot treatment in your garden. Baking soda kills crabgrass and other broadleaf weeds without harming the soil. It adjusts pH levels to deter regrowth. Versatile applications include lightly dusting, making a concentrated solution, or adding it to vinegar and salt mixes.

Carefully target weeds without contact on desired plants. Maximize control by applying during dry, hot conditions when weeds are stressed. Evaluate effectiveness over time and reapply if necessary. See satisfying results from this organic, eco-friendly alternative.

Effectiveness compared to vinegar

While vinegar brings more instant gratification in weed control, baking soda solutions require patience for results. Though vinegar visibly burns weeds within days, baking soda works subtly over time to dry out the roots.

Don’t be fooled by vinegar’s dramatic effects; with repeated applications, baking soda’s soil alkalizing power can provide equally effective long-term weed management.

Comparing Baking Soda to Other DIY Weed Killers

Comparing Baking Soda to Other DIY Weed Killers
Here are two alternative natural weed control solutions to compare with baking soda. Vinegar, especially when combined with castile soap, offers an effective way to desiccate weeds. Other options like rubbing alcohol, boiling water, salt, bleach, layered newspaper, lemon juice, or garlic juice can also eliminate unwanted plants, but may pose issues around toxicity or soil health.


Don’t worry – vinegar works fast as a weed killer, but it can damage soil long term. The benefits of vinegar include fast-acting weed control. However, its effectiveness varies, so it’s best to selectively patch spray weeds.

It’s a myth that vinegar harms soil chemistry. Consider using baking soda or boiling water as organic home remedies instead.

Vinegar and Soap

Mixing vinegar with some pure castile soap doubles as an all-natural weed and insect killer.

  • Sunlight
  • Moisture
  • Adhesion

With the soap added, vinegar adheres to the waxy leaves and exoskeletons of weeds and insects. This combination proves more effective than vinegar alone for lawn and garden pest control. The natural technique manages pests without leaving chemical residues in the soil.

Rubbing Alcohol

Rub your weeds with watered-down alcohol to nip them in the bud. Before you douse the weeds, saturate the surrounding soil. Dilute rubbing alcohol using two tablespoons per quart of water. Spray the weeds until dripping.

Reapply weekly. Take care around valued plants. First test in an inconspicuous spot. Read and follow the label safety directions carefully. Don’t be reckless with chemicals, my friend.

Boiling Water

To control weeds in their early stages, carefully pour boiling water directly on the invasive roots, avoiding damage to surrounding plants. Boiling water kills weeds by damaging the roots. Targeting small infestations with this simple method can help prevent weeds from taking over garden beds.

Varying application techniques and being precise with where the boiling water is poured will maximize effectiveness while minimizing harm to desirable vegetation.

Table Salt

Never sprinkle salt on your garden, as it instantly kills plants but leaves the soil barren for future plant growth. The sodium is absorbed by plants, then disrupts the plants’ cell metabolism which causes desiccation.

This leaves the soil salty and unsuitable for growth for months afterwards. Look to more sustainable weed control methods instead of table salt.


Because bleach efficiently kills weeds, with its chemicals evaporating in 1-2 days, it can seem like a quick solution. However, take care when using this potent chlorine near pets or children. Despite its fast results, bleach harms delicate roots, sterilizing the soil.

Seek out more natural solutions, like vinegar or boiling water, for safer weed control. For lasting freedom from garden pests, nurture healthy topsoil abundant with life. Though bleach rapidly eliminates unwanted growth, remember its drawbacks. With thoughtful cultivation, your garden can thrive without harsh chemicals.


Another effective way to control weeds in garden areas is to blanket them under newspaper to block out sunlight and air. Studies show that this surprisingly simple method wilts weeds in 1-2 weeks, as they are deprived of photosynthesis.

The natural mulching helps prevent future weed growth while also improving soil health, since newspaper breaks down over time. Weed prevention through newspaper is an eco-friendly, chemical-free gardening strategy that gardeners should consider.

Lemon Juice

You’ll quickly dry out and kill weeds with lemon juice’s citric acid.

  • Saturate weeds with lemon juice.
  • Spray daily for full effect.
  • Use diluted applications for lawn weeds.
  • Avoid plant contact for safety.

As a botanist, I often utilize the rapid drying power of lemon juice’s citric acid to swiftly eliminate unwelcome weeds without harmful chemicals. The acidic citric punch rapidly withers unwanted sprouts while nourishing the soil with nutritious minerals.

Daily applications ensure full effectiveness. I dilute as needed for broader applications across lawns and gardens. I carefully avoid plant contact for safety. When waging natural weed warfare, I unleash the citric power of lemons for quick, effective remedies.

Garlic Juice

Blend garlic cloves with water to make a natural weed control. Adding molasses helps the solution stick to plants. Garlic juice deters weeds and pests organically. Spray garlic mixtures on unwanted vegetation.

The compounds inhibit growth while nourishing the soil. Brew homemade garlic sprays for your garden.

How Does Baking Soda Affect Gardens?

How Does Baking Soda Affect Gardens
When applied to your garden regularly, baking soda offers benefits beyond weed killing. For example, baking soda helps prevent and treat fungal diseases, control insect pests, freshen compost piles, and even sweeten tomatoes.

Fungal Disease Prevention and Treatment

Your garden will thrive when you nurture the soil life.

  1. Increase airflow.
  2. Rotate crops yearly.
  3. Remove infected plants quickly.
  4. Apply neem oil spray weekly.

Baking soda prevents and treats fungal diseases in gardens when used properly. Mix one tablespoon of baking soda per gallon of water for a foliar spray. Apply every 10-14 days to prevent diseases like powdery mildew and tomato blight.

Treat infected plants promptly to limit spread. Do not overapply, as high sodium harms plants.

Insect Pest Control

Once hatched, larvae of some common garden pests like aphids, mites, and mealybugs can be halted by a light baking soda spray. This natural pest repellent controls insects without harsh chemicals. Baking soda’s alkaline properties disrupt soft-bodied pests upon contact.

However, repeated applications may alter soil pH, so alternate with neem oil or insecticidal soap. Monitor for signs of infestation, and treat young insects before populations explode.

Compost Pile Freshening

Since a balanced garden thrives in symbiosis, sweeten your compost’s song by sprinkling in earth’s melody.

A sprinkle of baking soda freshens and sweetens a compost pile. This simple act revitalizes the decomposition process and reduces odors. Apply 1 cup per 5 gallons of compost. The sodium bicarbonate balances pH, deodorizes, and deters pests.

  • Sweeter tomatoes
  • Lusher lettuce
  • Heartier herbs
  • Sturdier stalks
  • Vibrant vines

Rhythm flows through the garden. Let baking soda carry the melody of life.

Tomato Sweetening

Home gardens blossom in the sunbeams of your vigilance. With tomato sweetening techniques, bless your vines through baking soda’s pH balancing act. Its alkaline nature reduces acidity for sugar-filled fruits. Test small batches first in sweetening experiments.

Important Uses of Baking Soda in Lawns

Important Uses of Baking Soda in Lawns
As a horticulturist, I’d like to discuss some important uses of baking soda in lawns. When applied correctly, baking soda can help kill weeds without harming grass. However, misuse of baking soda can damage lawns, so it’s crucial to follow proper application methods.

We’ll cover preventing baking soda from killing grass, using dry and spray applications, and how different grasses react to gain a full understanding of using baking soda for weed control in lawns.

Preventing Baking Soda From Killing Grass

You’ll want to apply the baking soda carefully to avoid harming the surrounding grass.

  1. Spot treat weeds using a spoon or spray bottle for precision.
  2. Apply only under dry, sunny conditions over 85°F.
  3. Use cardboard or plastic to isolate treated weeds.
  4. Select an alternative like vinegar in lawns.
  5. Reseed bare spots once weeds are gone.

Prevent contact with grass to avoid damage when using baking soda on weeds. Target applications and explore safer options for a lush, weed-free lawn.

Using Dry Baking Soda to Kill Grass

Hey friend, lightly spread that powdered troublemaker around unwanted tufts when the sun is high to bid farewell to those bothersome blades. Let the sodium bicarbonate desiccate the green menaces while sparing the cherished greens.

But tread carefully – excess will mar the turf you aim to preserve. Wielded wisely, this powder purges pestilent patches, restoring your dominion. The carbonic cure-all conquers quietly, an ecological emancipation, a non-toxic triumph for the meticulous steward.

Using Baking Soda Spray to Kill Grass

After trying everything, if that stubborn patch of crabgrass still remains, grab your hose because it’s time to give it a soak. Mix one cup of baking soda with one gallon of water to make an effective spray. Apply during spring or fall when the grass is actively growing for the best results.

Consider clover as a grass-friendly, eco-option. With some seasonal TLC, your lawn will thrive while keeping nature in the mix.

Different Grasses’ Reactions to Baking Soda

Observe how the diverse grasses each respond uniquely when receiving that baking soda treatment. Bermuda grass withstands it admirably, while zoysia grass displays slight yellowing. Fescue varieties exhibit more visible damage, rendering spot treatment optimal. Weed control reactions are usually favorable across all turfgrasses.


Baking soda is a great choice for natural and effective weed control in your garden. It’s non-toxic, environmentally friendly, and versatile. With a few simple steps, you can use baking soda to kill weeds without fear of harming your plants or polluting the environment.

Additionally, baking soda can be used for a variety of other lawn and garden purposes, from preventing and treating fungal diseases to sweetening tomatoes.

It’s important to remember, however, that baking soda can also kill grass if not applied correctly.

If you know how to use it properly, though, baking soda is an excellent choice for keeping your garden weed-free and healthy.

Avatar for Mutasim Sweileh

Mutasim Sweileh

Mutasim is a published author and software engineer and agriculture expert from the US. To date, he has helped thousands of people make their yards lush and thick.