If you have plants surrounding your conservatory or you keep a lawn or garden, chances are that at some point you’ll come across some rather unwanted yet stubborn weeds growing around the perimeter. These are always a pain to get rid of, and never a chore we look forward to. Below we review the 5 best weed killers for dealing with these. If moss is your problem, we also reviewed the 5 best moss killers here.

1

Roundup Fast Action Weedkiller Pump 'N Go

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We are starting with this ready to use package. This Roundup Fast Action Weedkiller Pump ‘N Go is easy to use, which is great for non-professionals, and starts taking effect more or less immediately. It is a well-designed mini pressure sprayer. 

A systemic, broad spectrum weed killer, this solution kills all weeds in the surrounding area. The plant absorbs the solution and kills the organ, regardless of which part of the plant you sprayed. The weeds then dry up and can be cleared with an everyday rake. The full effect of the product can be seen within a day or two. This product is meant for use before planting, due to the fact that it kills everything in the vicinity, but wears off after a week or two ensuring you can plant in the treated patches.

The instructions are printed on the body in a clear and easy to read font. You will need protective equipment to handle. You should also keep children and animals away from the treated parts as it stains whatever it is sprayed on. The package comes with an ergonomic and easy-to-use handle that won’t stress the hand and is refillable.

One downside to this is that the rain washes away the solution, so it works best when dry. 

Key Features:

Ergonomically designed

Refillable container

Ready to use

Specification:

Brand

Roundup

Volume

5 litres

Weight

5.8 kg

Pros

Once used, the space that the solution has cleared can be reused for planting

The solution works quickly and is long lasting

Kills a broad range of weeds

Cons

Requires protective gloves to handle due to staining

2

Gallup Home & Garden Glyphosate Commercial Strength Weed killer

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Trusted by various professionals, the Gallup Home & Garden Glyphosate Commercial Strength Weed killer is an easy to use herbicide that works well on stubborn, deep rooted, annual or perennial weeds. There is a fast, visible action upon a single application to weeds that are commonly found in your garden, including bindweeds, willow herbs and dandelions.

As with most of these weed killers, you have to make sure that you concentrate solely on the weed as it may affect your garden plants as well. It is biodegradable, degraded by soil microorganisms ensuring it is not harmful to the environment. This herbicide is perfect for use during the spring to early autumn months.

You don’t need a knapsack for application and it comes with a complementary measuring cup. To use, dilute the solution with water in a sprayer as instructed and spray on the shoot (leafy parts) of plants. Do not apply near a water supply and you will need to use protective equipment including face masks to handle. You should also keep children and animals away from the treated parts. The rain reduces effectiveness and you will need to reapply if it does rain within two days of application.

Key Features:

Refillable container

Ready to use

Specification:

Brand

Elixir Gardens Barclay

Volume

2 litres

Pros

Works on most types of weeds

Quick action solution

Single application is usually enough for maximum effect

Cons

Not an effective moss killer

Requires protective wear when used

3

Roundup Fast Action Weed Killer

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Employing a simpler design to the regular pressure sprayer, this Roundup Fast Action Weed Killer is a broad spectrum, systemic action weed killer that exterminates all plants it comes in contact with. It does this by absorption into the root meaning you don’t have to worry about weed regrowth.

It is great solution if you find yourself in a minefield of weeds due to months (years) of unloved lawn care. This solution exterminates the weed in a single application, with the effect being visible within a few days. The weeds dry up, making them easy for you to rake and dispose.

The solution is biodegraded by the soil microorganisms within seven days of application, meaning you can start planting again without worrying about a re-invasion of the recently disposed of weeds.

It is easy to use and, just like the Pump ‘N’ Go above, comes with an ergonomic squeeze-to-use spray gun handle which can be refilled and reused. Again the disadvantages are it staining of skin and materials, so protective gloves are advised. Rain will also wash the solution before it can take full effect, so use when the clouds have cleared. 

Key Features:

Ergonomic design

Ready to use

Refillable container

Specification:

Brand

Roundup

Weight

998 g

Volume

3 litres

Pros

Effects can usually be seen within 2-3 days

Kills the root of the plant preventing regrowth

Cons

Protective gloves must be worn when using

4

Job Done RTU Tough Weed Killer

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The Job Done RTU Tough Weed Killer is an effective herbicide in a smaller ready to use package. It is a leave-in weed killer, ideal for use on deep rooted annual and perennial weeds such as thistles, nestles and brambles in your homes, conservatory and garden.

It comes in a small spray bottle that is easily hand wielded, allowing you to concentrate more on the weed you are trying to exterminate. The weed killer is systemic so it kills the weeds by absorption into the root, ensuring it does not regrow. The weed dries up and dies, making it easy to be raked and disposed of. This herbicide is a residual herbicide, protecting your soil from growth of other weeds for up to 3 months. It is also a fast action weed killer with visible effect within 24 hours.

This product is best used during the vegetative period of the weed and reapplication may be required if it rains shortly after application. It is ideal for broad leafed weed and grasses and may need a second application on really stubborn weeds.

Key Features:

Ready to use

Comes in spray container

Specification:

Brand

Job Done

Weight

998 g

Volume

1 litre

Pros

Great for garden weed removal

Visible clearing within 24 hours

Protects soil against further weed growth

Cons

May struggle against super stubborn weeds

5

Roundup Optima+ Total Weed Killer

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This Roundup Optima+ Total Weed Killer is another one from RoundUp. The weed killer is designed to kill all plants that it comes in contact with by systemic absorption action. Annual and perennial weeds such as dandelions, thistles and docks wilt and dry up within a couple of days ensuring quick and easy disposition, whilst you can also being safe in the knowledge that there is no regrowth. This herbicide is great for use between borders of flowerbeds, hedges, patios and drives. 

The product is environmentally safe as it is degraded by soil microbes after about 2 weeks of application allowing you to begin restoration of your flowerbed. It is formulated to kill the plants from the roots, ensuring they dry up within a few days. It is also entirely biodegradable. To be used before planting, it kills everything it touches but be assured it wears off after a week or two to ensure that you can plant in the previously treated areas.

It is easy to mix and the instructions are printed on the body in a clear and easy to read font. You will need protective equipment to handle. You should also keep children and animals away from the treated parts. Just like the models above, it is prone to staining skin or material objects and rain can wash off the solution. You will need a pressure sprayer to apply. 

Key Features:

Systemic weed killer preventing growth of more weeds

Biodegradable solution

Specification:

Brand

Roundup

Weight

1.2 kg

Volume

1 litre

Pros

Fast action solution with visible results in 2-3 days

Solution clears after 1-2 weeks meaning that the previously effected area can be reused

Doesn't allow weed regrowth

Cons

Requires a pressure sprayer to apply

Requires protective gloves to handle due to staining

Weeds can take a variety of forms, but are essentially just unwanted plants that you may find in your crops. Naturally, these can pop-up just about anywhere a regular flowerbed can. The issue soon becomes more unmanageable if these weeds begin to seed, producing a family of unwanted weeds.

Weeds can grow on just about anywhere with a bit of soil. You may even find them crawling up pieces of wood, meaning you’ll have to keep an eye on items such as a bird table and a garden storage bench should you them. It’s common when regularly fertilizing a lawn with a lawn spreader, as more plants tends to grow more unwanted weeds tend to as well.

The effects on your lawn care can also be devastating. They come into your garden, compete for food, water, sunlight and nutrients with your own plants, choking them off while completely monopolising the surrounding space. Also known as herbicides, there are several weed killers available and your choice depends on size of your issue.

Classes of herbicides include contact weed killers which affect the part of the weed they touch and systemic weed killers that are absorbed by the weed and kill every part of the weed. Below, we review a list of the five best weed killers. Some of the weed killers we review also serve as efficient algae, fungi and moss killers.