Instead of reaching for vinegar or salt, which can damage surrounding plants, an expert swears by another natural method to kill stubborn patio weeds at the root. The natural method kills weeds by shocking them with heat.
Patio weeds are a persistent problem that leave gardens looking untidy. While they can be pulled out manually, many gardeners opt for natural remedies such as white vinegar and salt. However, these natural approaches can cause more damage than benefit when applied improperly. Vinegar can immediately scorch and harm plant tissue if it comes into contact with desirable plants, while salt dehydrates vegetation by drawing moisture from its roots. Chemical weed treatments are another option, though they can pollute water sources, disturb ecosystems, and pose risks to human health.
Expert's Simple Tip: Boiling Water
While taking a break from manual weeding, Great British Bake Off champion and bestselling writer Nancy Birtwhistle revealed her method for eliminating stubborn patio weeds, reports the Express. Nancy states she steers clear of weedkillers containing "very toxic chemicals" and instead depends on natural techniques. She noted: "What do you do about those really tough weeds you can't reach by hand? I have a simple tip—let me show you!"
Nancy observes that certain patio weeds are straightforward to pull by hand, particularly after rainfall. However, for weeds proving too resilient to remove by hand, she advocates a straightforward natural remedy: boiling water. She heats water in a kettle, pours it straight onto the weed, and allows it to take effect. She continues: "After a day, you'll see the weed has shrivelled, and after two days, it's almost completely gone. For my vegetable plot, though, I still hand-weed."
How Does Boiling Water Kill Weeds?
Boiling water serves as a brilliant substitute for aggressive chemicals or salt and vinegar solutions, proving far gentler on the environment. The scalding water eliminates weeds by delivering a thermal shock. It essentially cooks the cells, bursts cell walls, and breaks down the plant's proteins. After the cells are compromised, the weed loses its ability to hold water, causing it to rapidly dehydrate, wilt, and perish. Boiling water generally damages the weed's root structure and stops it from sprouting again. While boiling water is effective against most weeds, it may struggle against firmly established perennial weeds with extensive root systems.
How to Use Boiling Water to Kill Weeds
Start by boiling fresh water in a kettle. Put on closed-toe footwear and protective gloves to prevent scalding. After the water reaches boiling point, pour it straight onto the weeds, targeting the roots where visible. If the root isn't accessible, direct the water to where the stem meets the ground. Take care not to splash boiling water on surrounding plants, as it will damage whatever it comes into contact with. Allow the boiling water to take effect for a day or two, then assess the weed's condition. If it's shrivelled and lifeless, yank it out or brush it aside. Should the weed emerge again after seven to 10 days, just go through the process once more.
How to Remove Weeds from Beds and Borders
Manual removal is usually the swiftest and simplest approach to clear weeds from beds and borders. Hoeing proves most successful for eliminating seedlings and can support soil vitality. For more deeply embedded perennial weeds, using a hand fork to extract the root ball may be necessary. Where weeds are especially deep and firmly established, gardeners might require a spade or garden fork to excavate the root system. Those wanting to clear weeds from beds and borders could employ mulch or cardboard. Mulch, including bark and compost, along with cardboard, obstructs sunlight and stops weeds from germinating. For extensive areas with abundant weeds, covering the space with a plastic sheet or tarp is an option.
