How To Prevent Lawn Grubs

You have spent the winter months prepping your lawn for spring, and giving it some TLC, but now you have some unwanted pests taking over. Lawn grubs are one of the most common garden pests in Australia, and in fact, we have over 2000 native species. 

What Are Lawn Grubs? white-grubs-eat-the-organic-matter-in-the-landscap-M939K3L.jpg

There are two types of lawn grubs that are most common: root feeding and surface dwelling. Root feeding grubs work their way deep into your lawn and can do damage to your grass from the root up, making it hard for new grass to grow. Surface dwelling grubs on the other hand are easier to spot and to treat. 

What Time Of Year Do Lawn Grubs Appear?

Spring and summer are the two best seasons for lawn grubs as you have fertilised your lawn and the grass is growing. Moisture is the perfect environment for lawn grubs and can attract all sorts of unwanted garden pests. So how do you spot lawn grubs, and how can you prevent them and get your lawn back?

How Do I Spot Lawn Grubs? 

The number one way to spot lawn grubs is at dusk or night when your indoor lights are turned on. Bugs, beetles and moths are attracted to the light coming through your doors and windows at night. If they are present, it is often a sign of lawn grubs. 

Damaged, spongy grass is also a good indicator that lawn grubs are present. This is because the lawn grubs have eaten away at the grass and so the roots are unable to remain firmly in the soil. 

One last indicator you should keep a look out for is whether you have an increase in bird activity in your backyard. Birds such as magpies love lawn grubs and will often come down to feed on them. 

What Do Lawn Grubs Do to Your Lawn?

As the grubs eat away at your lawn, especially following the winter months, your grass may develop brown patches and appear to stop growing. Often this is the first sign people pick up on as it is most noticeable.

How To Prevent An Infestation Of Lawn Grubs

Every lawn and garden is susceptible to pests and it isn’t always completely avoidable. However there are ways in which you can help your lawn recover. A healthy lawn is the quickest to recover from pest infestations. Keep your lawn fertilised, watered and appropriately trimmed. In spring and summer, this means watering and mowing more often than you would in winter. In the warmer months, do not cut your grass too short as it will add unnecessary stress to your lawn. 

Spraying a chemical or insecticide over your lawn at the first sign of infestation is the best way to prevent a large-scale infestation of lawn grubs. Acting quickly and repeating treatments is the most efficient and effective treatment for lawn grubs. Certain types of lawns may bounce back quicker than others after an infestation.

There are other ways you can treat lawn grubs which include natural sprays and pest killers that don’t harm other garden creatures such as ladybugs and bees. 

No lawn is exempt from pests, the trick is to spot them early and apply treatment. Keep your lawn well maintained so that it grows back effectively if you do happen to receive those unwanted guests. Apply your lawn care products per the season and look out for any signs of grubs.

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