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. 




ADL Success Stories – Dairy Cattle Farming with Annabella Baker

Education opens doors to success windows of opportunity and in at least one case, gates to new possibilities. Such is the case with ADL success story Annabella Baker.  Originally from Italy, but now living in the UK, Annabella faced a tragedy all too familiar to many when she lost her airline job during the Covid

Read More »

Horticulture – Learn the Basics: Three Problems for New Gardeners

Gardens are hard work.  Behind every immaculate lawn and carefully tended flowerbed is a never-ending struggle between nature and gardener. Of course simply leaving the garden to its own devices isn’t really an option; Untended, plants will grow freely for the whole of spring and summer and even into autumn. Worse yet, an uncared for

Read More »

Henry Hoover’s Broken Plug

Some stories of educational achievement soar into the heavens.  Of individuals who through hard work and toil overcame the challenges in their life to achieve. Certainly, at ADL we’ve seen and helped many individuals achieve their dreams through completing a course which helped them get a place at university or begin a new career. This,

Read More »

King Charles and the Grey Goo

If you’ve been in the UK over the past weekend you might have noticed you had a day off on Monday (or looked on enviously as other people had a day off).  The coronation of a new monarch in Charles the Third means a new era. One that the Monarch is especially keen does not

Read More »

Could You Be a Personal Trainer?

If you’re looking for a side business or career that combines a love for fitness and a mentoring role. personal training might be for you Personal training is at it’s heart all about being able to help people live healthier, happier lives.  By combining physical exercise with essential lifestyle changes like diet they help their

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.