WHEN TO USE LAWN WEED KILLER

When using lawn weed killer, you want to ensure that you get the maximum impact from it each time. Weed killers can also be damaging when used incorrectly, so timing is important.

BE CAREFUL:

Make sure that you use lawn weed killer and not normal weed killer on a lawn

Take a read of the rules to abide below:

Time of Year - April to September

When using a lawn weed killer, you want to use this during the growing season (April to September). You are going to be killing weeds and creating gaps in the lawn, so you want to ensure that you are able to fill those gaps, which is only possible in the growing season. If you aren’t able to fill in those gaps, the weeds will be back again!

If you want to get updates on when you can use your lawn weed killer, sign up to the Lawn Club.

Weather - Dry Weather (24 Hours)

When you have applied the lawn weed killer, you want to maximise the effect of it and prevent any sort of dilution that rain can cause. Because of this, ideally you want 24 hours of dry weather after the lawn weed killer is applied, although 6 hours would be a very minimum.

Weather - Not Too Dry

On one hand, we do not want wet conditions when applying a lawn weed killer, but on the other hand, we also do not want to use it during a severe drought. During a drought, your lawn shall become dormant which makes it tough to fill in the gaps that are created from the weed removal and the lack of moisture can cause harm to the lawn. 

Weather - Not Windy

You want to ensure that you can accurately apply the lawn weed killer and that it actually makes its way onto the weeds. When we have windy conditions, both of these can be difficult, so try to avoid windy conditions when applying your weed killer. 

After Mowing Your Lawn

When applying lawn weed killer, you apply it to the leaves of the weed which absorb the treatment and then kills the whole plant. So, if you cut the lawn straight after applying a weed killer, it is going to remove the part of the weed that you have just sprayed and will not kill the root.

So, the best time to apply weed killer is after mowing your lawn. Once you have applied the weed killer, try to leave it as long as possible before its next cut - 3-4 days should normally suffice. 

4 Weeks Between Spot Treatment

Lawn weed killers will not damage your lawn if applied correctly, however, if you apply too regularly, there is a chance that this will cause harm to your lawn. Your lawn weed killer will have advice on it stating how often it can be used, but in general, you do not want to be applying it anymore frequently than every 4 weeks when doing a spot treatment.