Deadliest Weeds – 5 of the Worst

Pragmatically speaking, any plant that grows where it isn’t wanted could be considered a weed.  If it takes resources and nutrients away from the plants you want growing on a lawn, in a flower bed or in a vegetable patch, then it is a nuisance that needs to be dealt with.  But not every weed is relatively benign, like a Dandelion in a row of tulips.  Some are an active menace to the plants they grow alongside.  If you see any of the following get a toe hold in your garden – act quickly!

Bermuda Grass

This tough, resilient grass is a popular fixture in sports fields where its rugged nature and quick ability to regenerate itself make it an ideal turf for enduring vigorous sporting activities played out atop it.  However, these same tough qualities result in a plant that can be difficult to eradicate, especially should it reach areas it was not meant to go. Its vigorous nature rapidly crowds out other grasses and some varieties are even capable of expressing toxic chemicals that are hazardous to other plants and some livestock.  Not for nothing has the plant earned its nickname “devil grass”.


The Lazarus of the plant world, Bindweed seeds can stay viable for up to 50 years meaning that a young gardener of twenty today could well be fighting the same plant family in retirement.  Avoiding a lifelong struggle with this plant is difficult, as it can regenerate entirely from mere fragments left in the soil and its roots can bury themselves over 30 feet deep.  Given its resistance to herbicides, many gardeners find that only ongoing vigilance can keep on top of it.

Japanese Knotweed

So invasive and damaging is this fast-growing, resilient import from the far east, that mortgages have been refused for properties with Japanese Knotweed anywhere near them.  In the UK, it can be a struggle to get a mortgage on a property if no formal plan is in place lasting a minimum of five years to contain or eradicate the plant.

The world conservation union has listed this plant as one of the worst pests in the world.  It thrives in temperate climates and can be found as far afield as America and New Zealand where it is never welcome.


Another menacing plant import from Asia, the Kudzu vine is famous for its ability to literally grow a foot in a day under ideal circumstances.  A major problem plant in North America, Kudzu was originally brought over in 1876 and used as a fast-growing shade providing plant.  Later, over a million of acres of the plant were seeded as a means to prevent topsoil erosion.

The problem with Kudzu is that its fast-growing nature helps it out-compete many native plant organisms allowing the Kudzu plant to literally grow over them.  By smothering other plants in the shadow of its leaves, the plant effectively kills off its competition.  That means that wherever it shows up, action is essential if it isn’t to upset local ecosystems.


With its regular appearance in the middle of freshly mowed lawns, the dandelion has earned the enmity of gardeners across the world.   It may not be the most durable of plants, but its relatively low height and rapid growth continue to be a problem.  The fact that dandelions absorb up to three times as many nutrients as other plants from the soil makes them aggressive and unwelcome competition wherever they appear.

On the other hand, they make rather good eating.  And it’s not just rabbit food – the leaves make for good salad greens, the heads are excellent fried and the roots can be ground up for coffee.  Even dandelion wine is a thing.

Got a garden pest and a tip to get rid of it?  Let us know in the comments. 




September Newsletter 4 2022: With Cat-like Tread!

Cat Psychology and Training 100 Hours With our Cat Psychology Online Course, you’ll learn to understand cat psychology and apply that knowledge to manage and influence the behaviour of cats. Learn to understand how cats think and the relevance of cat psychology to people. How cats communicate; and formulate an understanding of possible ways that

Read More »

September Newsletter 3: Don’t be a counselling fraud, be a Freud!

Counselling and Psychology 600-Hour Online Higher Advanced Diploma Counsellors and psychotherapists are in high demand; learn the skills and training required through distance learning with ADL’s Counselling and Psychology Online Course. The industry is currently worth in excess of £60 billion in the UK alone, so if you believe you have the attributes to become part

Read More »

September Newsletter 2 2022: Don’t go selling coals to Newcastle!

Sales Management 100-Hour Online Certificate Course For any company or organisation to succeed financially, it must have a desirable product. This product must be of need to a large proportion of the general public. Advertising, using all available media outlets, should get the message across. But the most important link after the manufacturing and advertising

Read More »

Diploma vs Certificate?

The Benefits of Transitioning from a Certificate to a Diploma? Autumn is now fast approaching.  It’s a great time of the year to start making plans for your future and to evaluate what direction you might want your career to go. Those long winter nights provide the right atmosphere for study, to expand your knowledge,

Read More »


Scroll to Top


To speak to one of our course advisors, please enter your name and phone number below and click the "Please Call Me" button. We will call you back as soon as possible!

By submitting this form, I provide my consent to ADL to contact me via email or telephone, regarding the course I selected. All information provided is protected in conformity with our Privacy Policy.


required fields are marked with *

By submitting this form, I provide my consent to ADL to contact me via email or telephone, regarding the course I selected. All information provided is protected in conformity with our Privacy Policy.