When to Use Weed and Grass Killer? (Complete Guide)

Sometimes it seems inevitable to use weed or grass killers depending on your needs. Whenever this is the case, some people prefer to use organic options, which often fail to get rid of the weed. So, the next option is to consider using commercial weed and grass killers.

Even if you opt for these commercial products, sometimes things can go wrong quite fast. This is common with people who do not take their time to read the product label. It is why we want to discuss some tips and facts on weed killers to help understands when and how to use weed and grass killers.

Crucial Facts About Weed and Grass Killers

1. Depending on the age of lawn weeds, most would die with one application of the weed killer. If your lawn has mature weeds or grass, then additional spraying might be necessary. So, what are mature weeds? These are the massive weeds that you waited too long to eliminate. The perennial weeds will also be stubborn as they have more robust root systems. Thus, more applications might be necessary.

2. Just because the weed killer is strong in concentration, it does not mean it is better. You must follow the instructions given by the manufacturer to apply the right dosage. It is better to spray again rather than opt for a heavier dose.

3. You need to understand that weed killers work differently. Some will take time while others act fast. With some types of weed killers, you might start seeing results within a few hours, while others may take several days before you notice anything. A fast weed killer will mostly be non-selective as it will kill everything it touches. So, know where best to use one.

4. If you need the best performance from weed killers, then go for liquid-based weed killers. They work better as compared to using granular products.

5. Always clean your sprayers before using them for the next application. Some use the sprayers for liquid weed killer applications and then forget about cleaning them. When they use the same sprayer for applying fertilizer, they end up adding a weed killer to the fertilizer. The results are that you end up with dead plants when you could have avoided the scenario.

Important Tips for Using Weed and Grass Killers

Important Tips for Using Weed and Grass Killers

Whenever you need to use weed and grass killers on your lawn, there is the need to do it correctly. Below are tips to get you started.

1. Do not spray during extremely hot weather. For temperatures above 85 degrees, there will be an amplification of the stress onto the grass damaging it if your aim was to only get rid of weeds.

2. It is advisable not to apply weed killer products in places with young grass. The young grass does not have the same type of chemical resistance as compared to mature grass. They are likely to get burned off quickly.

3. You should consider spraying weed killers when there are fewer chances of ending up in the rain. The weed killer will remain on the foliage for quite some time, so any rain or irrigation might spread the chemicals to other unwanted areas.


Before you can decide to start using a weed and grass killer, understand the possible impacts first. Always choose the right type of weed killer depending on the application.

We would recommend that you get a liquid weed killer as it is suitable for precision and remains the best option to get right now. Read reviews about the weed killer if necessary, to understand what more you will be getting with it.

Maurice Johnson

Maurice Johnson

I’m Maurice Johnson, and first of all, I’d like to welcome you to my website. Here at bestweedkiller.org, we keep it simple.

At bestweedkiller.org, you’ll find updated reviews and tests of the most popular brands of weed killers and other accessories.

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