Combating garden chafers

Garden chafers in your garden? ✅ Effectively and biologically combat grubs in the soil with GREEN GUARDIA HB nematodes – for healthy lawns and plants.

1. General information about garden chafers

The garden chafer (Phyllopertha horticola) belongs to the scarab beetle family and is a feared garden pest. Adult beetles appear from May to July and feed on the leaves of roses, fruit trees, shrubs, and many other plants.

However, the larvae (grubs) in the soil are particularly damaging. They feed on the roots of lawns, ornamental plants, and vegetable crops. Severe infestations can lead to brown patches in the lawn, wilting plants, and even the death of shrubs.

2. Detecting garden chafer infestation – typical signs

An infestation manifests itself differently depending on the stage of development:

  • Beetle infestation (May–July): Small, brownish beetles with metallic-green heads that leave prominent feeding holes on leaves.
  • Larvae in the soil: White grubs with brown heads, rolled up in a typical C-shape.
  • Lawn damage: Brown, dry patches that can be easily removed from the soil because the roots have been eaten away.
  • Secondary damage: Birds or wild animals dig for the grubs in the lawn.

3. Preventing garden chafers – Tips for garden & lawn

You can limit damage caused by garden chafers with these measures:

  • Optimize lawn care: Regular mowing, fertilizing, and watering strengthens the turf.
  • Keep the soil loose: Grubs feel particularly comfortable in compacted soil.
  • Check trees and shrubs regularly: Detect beetle infestations early in the summer.
  • Promote nesting sites for birds: Many bird species feed on grubs and beetles.
  • Early biological treatment: Use beneficial organisms in the soil in a timely manner, especially during the larval stage.
Recommended product

Targeted use in the soil: HB nematodes seek out the larvae of the garden chafer in the soil and thus contribute to a significant reduction in infestation.

  • Easy to use: Quick and easy to use in just a few steps – ideal for use in the orchard.
  • Natural & gentle: No chemical additives – safe for humans, pets and plants.
  • Long-term effect: Supports the sustainable control of codling moth and helps maintain healthy apples.

HB nematodes against black vine weevils and grubs HB nematodes against black vine weevils and grubs
HB nematodes against black vine weevils and grubs
From €11,99
€1,20 /m2

4. GREEN GUARDIA products against garden chafers

GREEN GUARDIA HB nematodes against garden chafers

HB nematodes (Heterorhabditis bacteriophora) are the proven biological solution against garden chafer grubs in the soil. They are applied with water, actively penetrate the grubs, and reliably kill them.

Advantages:

  • 100% natural, biological control
  • Effective against larvae of garden chafers, cockchafers and June beetles
  • No danger to humans, pets or beneficial insects
  • Easy application with watering can or syringe
  • Ideal for lawns, flowerbeds and under shrubs

👉 Through the targeted use of GREEN GUARDIA HB nematodes , the grub population can be significantly reduced. This interrupts the pest's development cycle and prevents new generations of beetles the following year.

✅ Conclusion: The garden chafer inflicts double damage on plants – through the beetles on the leaves and the grubs on the roots. With consistent prevention and the use of GREEN GUARDIA HB nematodes, you can protect your lawn, shrubs, and flowerbeds sustainably and without chemicals.