Total vs Selective Weed Killers: Which Should You Choose?
Not sure whether you need a total or selective weed killer? Learn the key differences, what each one controls, and how to choose the right option in this expert guide.
Choosing between a total and selective weed killer depends on what you want to remove. Total weed killers eliminate all plants and vegetation they touch, making them great for hard surfaces and clearance work. Selective weed killers target specific weeds while protecting grass, making them better suited for lawns and turfed areas.
What is the difference between total and selective weed killers?
There's a bewildering array of weed killers on the market, all claiming to offer different benefits. Some boast rapid reaction times, removing unwanted vegetation within hours. Others are designed to deliver long-lasting results, while some are chosen for their non-hazardous formulations.
With all of these different products vying for your attention, selecting the right weed killer for the job can seem like a tall order. If you're not sure where to start, we're going to cover the two main types of weed killer in this guide. Not only will we explain what each type does and how they differ from one another, but we'll also help you decide which one is right for you - and suggest a few products that you might find useful.
What is a total weed killer and what does it do?
Otherwise known as a non-selective weed killer, this type of product is designed to provide a complete, all-encompassing weed control solution. Most total weed killers use glyphosate as their primary active ingredient, which works by blocking the plant's production of proteins, which it needs to survive and grow.
As a result, total weed killers can kill practically any plant (not just the ones you are wanting to get rid of). This is a great thing in certain circumstances, however it is important to be careful where you are spraying as if you are trying to control weeds in amongst plants you are wanting to keep you would not want the total weed killer to come into contact with these as they would also be controlled! Total weed killers also won't prevent new weeds from germinating - you'll need to reapply the product each time new weeds develop.
How do selective weed killers work?
Selective weed killers won't kill everything in their path. They're designed to only work on specific plants, with a variety of unique formulations available to tackle specific types of weeds while avoiding grasses. They work by stimulating excessive growth in the target plant, so much so that it's no longer able to sustain its rate of growth. The plant will then die.
Should I use a total or selective weed killer?
If you have weeds growing through hard standing areas, gravel or around buildings, you probably want a total weed killer. These products will seep through the cracks or gaps, killing the weeds quickly and effectively. It's for this reason that total weed killers are often used during construction projects and across industrial areas, where harm can't be caused to areas of grass.
If, on the other hand, you need to remove a specific type of weed from a lawn, paddock or piece of turf, selective weed killers are the way to go. They won't harm surrounding grasses and will target only the plant you are wanting to get rid of. The surrounding vegetation will be unharmed so you won't have to worry about killing your grass.
If you choose a selective weed killer, make sure that you get the right one. If you're not sure which type of weed you're fighting with, ask our experts for advice before you place your order.
What is the difference between selective and total weed killers?
Before choosing a product, this comparison table can help you to understand the key differences between selective and total weed killers. The right choice depends on whether you want complete vegetation removal or targeted weed control while protecting surrounding plants.
| Feature | Total Weed Killer | Selective Weed Killer |
|---|---|---|
| Main purpose | Removes all vegetation | Targets specific weeds |
| Best used for | Paths, gravel, hard surfaces, industrial areas | Lawns, turf, paddocks and grassland |
| Affects grass | Yes | No (when used correctly) |
| Common ingredient | Glyphosate | Various formulations |
| Ideal for | Complete clearance | Protecting surrounding plants and grass |
Which total and selective weed killers do we recommend?
Now you know the difference between each type of weed killer, let's take a look at a few of our most popular products.
Total Weed Killers
- Roundup ProActive:
A favourite of professionals, ProActive is a glyphosate weed killer that delivers consistent results. As a bonus, it’s been certified as non-hazardous by COSHH, making it safe for both humans and pets.
- Gallup Biograde Amenity:
Containing a similar concentration of glyphosate, this great-value product works on everything from grass weeds to perennial broad-leaved weeds and woody plants.
Read our guide to our best total weed killers and find out which products are best suited for tackling stubborn weeds and achieving long-lasting control.
Selective Weed Killers
- Grazon Pro:
One of our strongest-selling products, Grazon Pro is a formidable selective treatment designed for pastures. This product tackles docks, thistles, nettles, bramble, broom and more - all without harming your grass.
- Depitox 500:
Another hugely popular product, Depitox 500 is a highly effective grassland weed killer designed for use with a boom sprayer. It can remove the likes of buttercup, plantain, daisy, dandelion, lesser celandine, self-heal, yarrow and ragwort and is safe to use on agricultural or amenity grassland and turf.
How ProGreen can help
Choosing the right weed killer doesn’t have to be complicated. With so many different products available, it can be difficult to know which solution is best for your specific weeds and growing environment. Whether you need advice on understanding application methods or finding the right product for your needs, the ProGreen team is here to help.
With years of experience supplying professional-grade weed control solutions, we’re trusted by customers across a range of industries. Our expert knowledge, high-quality product range, excellent customer service and commitment to providing top-notch advice ensures you can make confident decisions every step of the way.
Browse the full range of weed control products or get in touch with the team for personalised guidance and recommendations on 0330 165 5568 or info@progreen.co.uk.
FAQs
Can I use total weed killer on a lawn?
No. Total weed killers are designed to kill all vegetation they come into contact with, including grass. For lawns, a selective weed killer is usually the better choice as they are designed to target specific weeds while leaving surrounding grasses unharmed when applied correctly.
How long does total weed killer take to work?
The time depends on the product and conditions, but many total weed killers begin showing visible results within a few days.
Will selective weed killer kill all weeds?
No. Selective weed killers are designed to target specific weed types, so choosing the correct formulation is important. Browse our selective weed killers.
What equipment do I need to apply weed killer effectively?
Depending on the size of the area and the type of product you’re using, you may need a suitable sprayer, protective equipment, measuring tools and more to ensure accurate application. From handheld sprayers for smaller jobs to professional spraying equipment for larger areas, we have a range of equipment and accessories to help you get the best results from your weed control products.
What weed killer should I use on gravel or paving?
A total weed killer is generally the best option for gravel, paving, and hard surfaces because it removes unwanted vegetation growing through gaps and cracks. Sometimes weed sits amongst moss and algae on hard surfaces, which may require additional control products.
Can I use the same weed killer for different areas?
Not always. The best weed killer depends on the type of weed and whether you want to protect surrounding plants. Speak to our team for more advice.