For every unwanted weed popping up in your borders, there’s an online hack claiming to eradicate them forever. We took a look at some of the most popular ideas, to find the ones worth trying, as well as the ones that should be weeded out for good.

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Landscape fabric helps prevent weeds from infiltrating your borders – for a while. Sarah Cuttle
Landscape fabric helps prevent weeds from infiltrating your borders – for a while. Sarah Cuttle

1: Landscape fabric to ‘permanently’ wipe out weeds

How it works: Lay thick sheets of heavy-duty weed membrane to suffocate existing weeds, prevent new ones from growing and keep the area ‘neat and tidy’.

The big problem: In the short term, this method will certainly hide and possibly kill whatever is underneath – a great option for keeping an allotment bed free of weeds for a couple of months. But plants have clever ways of getting around even so-called ‘permanent’ plastic. From below, deep-rooted weeds like creeping thistle (Cirsium arvense) or field bindweed (Convolvulus arvensis) will find their way through to cracks or the outer edge of the membrane. From above, tiny weed seeds carried on the wind, like those of the dandelion (Taraxacum officinale), will germinate on the surface, plunging thick tap roots through the membrane into the ground below. Any gardener who has tried to get a dandelion out when its deep roots are entangled in these plastic fibres will tell you it is almost impossible without tearing holes, snapping the root, which will then regrow or both. For any period longer than a few months, the weeds will find a way.


Hoeing off weeds in a stale seedbed is far better for soil health than using herbicide. Neil Hepworth
Hoeing off weeds in a stale seedbed is far better for soil health than using herbicides. Neil Hepworth

2: Stale seedbed

How it works: Rake your empty seedbed, allow weed seeds to germinate, then swoop in and destroy them.

The big problem: This is an excellent way of removing annual weeds before they become a real problem and start competing with your precious vegetable crops. The big question is how you remove those weed seedlings. Some influencers recommend using a herbicide, but it’s safer for your future crops to invest in a simple garden hoe and cut them off at the root. A little more effort, but much better for soil and plant life. Before you begin, make sure to dig out any deep-rooted weeds with a sturdy garden fork.


Laying solar sheeting adds to the amount of plastic in the garden. Sarah Cuttle
Laying solar sheeting adds to the amount of plastic in the garden. Sarah Cuttle

3: Solarisation using sunlight and clear plastic to heat soil and kill weed seeds

How it works: Lay a sheet of transparent plastic on a prepared seedbed and allow dormant weed seeds to germinate, dry out and die.

The big problem: Aside from the cost, faff and environmental impact of bringing yet more unrecyclable plastic into the garden, British springs in recent years have been relatively cold. This method relies on predictable spells of hot weather – and that may well not arrive before you want to get your beds growing. Save the effort (and plastic) and opt for the stale bed technique instead.


Pouring boiling water on weeds only works in specific places for specific plants. Jason Ingram
Pouring boiling water on weeds only works in specific places for specific plants. Jason Ingram

4: Boiling water

How it works: Pour boiling water on pesky weeds.

The big problem: For the right weed in the right place, it’s worth a try. Annual weeds in tricky spots like paving cracks may be killed off with this quick, cheap method. It’s far less effective on deep-rooted perennials like green alkanet (Pentaglottis sempervirens) because the roots may escape damage and will grow again. Plus, you’ll feel a bit silly running back and forth to the kitchen to boil the kettle – not practical for a big driveway.


5: Vodka (main image)

How it works: Spray a vodka/water mixture directly onto weeds to dehydrate them, causing them to wither and die.

The big problem: This method is really an attempt to replace chemical herbicides with something less harmful (but in this case, quite a lot more expensive). The problem is, as herbicides go, this one is very weak, indiscriminate and not very effective. As it's a contact herbicide (as opposed to a systemic one), it only damages the part of the plant it touches, so it won’t get to the root of those dandelions and actually kill them. Mixing your own herbicides or using household products is not advisable because they can damage soil, soil organisms and the environment. Better to mix yourself a nice Espresso Martini instead.


Baking soda won't kill plants completely – far better to dig them out instead. Getty Images
Baking soda won't kill plants completely – far better to dig them out instead. Getty Images

6: Baking soda

How it works: Sprinkle baking soda directly onto weeds to kill them, particularly on tricky spots like paving cracks.

The big problem: Another attempt to replace chemical weedkillers, this method will certainly damage any plants it touches; it won’t go into the root and kill the plant completely. It is mainly effective on those tiny annual weeds in cracks and crevices of paving, but boiling water would do the same job.


Mixing your own weedkiller, even from eco-products, isn't advisable. Getty Images
Mixing your own weedkiller, even from eco-products, isn't advisable. Getty Images

7: Spray of vinegar and baking soda

How it works: Mix one part baking soda, two parts white vinegar and lemon juice to spray on young or annual weeds in paved areas.

The big problem: This is fairly effective on shallow-rooted, young, annual leaves in paving, but again, it won’t make a dent on deep-rooted perennials and mixing your own herbicides isn't advisable. Plus, the smell might put your neighbours off their barbecue. In the border, it would be far more effective to hoe, dig or hand-pull the weeds.


No-dig mulching can be effective at keeping weeds away. Jason Ingram
No-dig mulching can be effective at keeping weeds away. Jason Ingram

8: No-dig mulching

How it works: Place layers of cardboard directly on the bed, then add compost, leaf mould or well-rotted manure on top.

The big problem: When it works, this is a fantastic method for creating new ornamental or veg beds directly onto the lawn, or for renovating and extending existing flower beds. Over time, the cardboard rots down, and worms pull the compost into the soil, improving texture, and the weeds underneath are largely killed off. However, there are a few caveats. Really deep-rooted weeds may survive and should be dug out first. As well as this, if the cardboard doesn’t rot down quickly, you could find that hungry birds will peck around in the bed and fling bits of cardboard all over your garden. Give the cardboard a thorough soaking before adding the mulch to ensure it rots down quickly. More is more with this method – when it comes to weed control, a really thick mulch (5-8cm) is best.


f you do opt for thermal weed control, make sure what you use is legal. Getty Images
If you do opt for thermal weed control, make sure what you use is legal. Getty Images

9: Flame throwers

How it works: This is a DIY version of weed burners, which use live flames to burn up unwanted plants.

The big problem: Fire will obviously damage and potentially kill shallow-rooted, annual weeds, and weed burners are particularly effective on those pesky patios and driveways (as long as you don’t mind scorch marks). However, while weed burners are legal to buy in the UK, flame throwers are considered a firearm, and even weed burners need fuel or power, and can pose a fire hazard. No matter what our Atlantic cousins are doing on TikTok (some of them in flip flops!), flame throwers are not a safe or legal gardening tool. Save any pyromaniac zeal for fireworks night.


Car batteries aren't safe to use in weed control. Getty Images
Car batteries aren't safe to use in weed control. Getty Images

10: DIY zappers made from car batteries

How it works: Some inventive TikTok farmers have connected tractor batteries to create electric weed “zappers” that burn weeds as they touch them.

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The big problem: While it makes for impressive content, this method only scorches the leaves and doesn’t reach the roots. There’s also a real risk of fire – and of invalidating your car insurance.

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