Don’t let Chafer Grubs EAT YOUR Lawn!

Before your lawn becomes a dining experience for birds and other mammals such as Badgers and Foxes make sure you act now …..

Right NOW is the perfect time to treat lawns to prevent and control Chafer Grub infestation!

Chafer Beetle Larvae are the larvae of the Common Chafer Beetle or more commonly known as the May or June Bug that can be seen flying around on warm early summer evenings. Chafer grubs are fleshy, white, and curved, with brown heads and 3 pairs of legs on the front segments of their body.

Rhizotrogus majalis – Adult Chafer Beetle (Commonly known as the May or June Bug)

Phyllopeertha horticola – Larvae (Commonly known as the Chafer Grub)

What kind of damage can you expect to see from Chafer Grubs in your lawn?

  • The Grubs feed on the roots of grasses during the Spring and Summer. Grass root growth will be slow and you will see yellowish or brownish patches on your lawn. As the grasses are eaten off you may well loose a complete carpet of turf!
  • The most serious damage will occur when the local wildlife find that your lawn contains highly nutritious and protein rich larvae! Birds, particularly of the crow family will peck away and tug at the loose turf
  • Badgers, foxes and hedgehogs will also find your lawn to be a prime source of food. They will tear away at an already weakened lawn to get at the Grubs. The damage can be devastating and may continue through Autumn, stopping only during cold weather, but will restart in Spring as the Grubs move back to the surface

What should you do if you suspect a pest problem with your lawn?

  • If you suspect a problem within your grass roots, you should examine the turf thoroughly to find the culprit. Pests are often found in stressed areas, such as the edges of lawns or in shady or wet areas. They are not always distributed evenly so it will be advisable to look for spots that are discoloured, distorted or stunted.
  • Spotting the adult chafer beetles will help you to identify the pest responsible for the damage, BUT always inspect the lawn for the grubs to be sure.

Controlling Chafer Grubs in your Lawn

  • Once you have performed a positive identification you can control them by applying an insecticide, usually in the growing season between April to September.
  • Eggs laid around now by the Chafer beetle will soon hatch. The Larvae or Grubs will begin eating the roots of your lawn. Depending on species these pests have a life cycle of up to three years before hatching as flying beetles but the most common will fully develop within one year. Left untreated the grubs will be pretty much immune to insecticide application by September.

There is little or any benefit repairing and renovating any damage to your lawn until you have killed the larvae. As Chafers live in the soil for up to three years you can have more than one generation in the soil at any given time. Prevention is always better than cure so once one application has been performed, repeat annually in the growing season, if repeat outbreaks are common particularly in light sandy soil areas.

If you are unsure what you are looking for or how to diagnose a problem, you can call your local Lawnscience Expert on 01908 504664 (Lines open 24/7). We can arrange a visit to your lawn and provide you with a diagnosis and solution. Take a look at our page on lawn pests for further information