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How to Treat Citrus Gall Wasp in Perth, WA – Prevention & Recovery - Citrus Gall Wasp Treatment Perth.

  • manbunmowing
  • Apr 6
  • 2 min read

Citrus Gall Wasp Treatment Perth. Learn how to identify, treat, and prevent Citrus Gall Wasp in Perth, Western Australia. Expert tips on pruning, recovery products, and long-term care for your citrus trees.


What Is Citrus Gall Wasp?

Citrus Gall Wasp (Bruchophagus fellis) is a tiny insect that lays its eggs in the soft new growth of citrus trees. Over time, this causes swollen lumps—called galls—to form on branches. Left untreated, these galls reduce tree health, fruit yield, and overall vigor.


Close-up of a Citrus Gall Wasp in Perth, Western Australia, responsible for the formation of galls on citrus tree branches.
Close-up of a Citrus Gall Wasps in Perth, Western Australia, showing the small black insect responsible for gall formation on citrus trees.

Why It’s a Problem in Perth

Our warm climate in Perth, WA creates the perfect conditions for Citrus Gall Wasp to thrive, especially in suburban gardens. With many homes growing lemon, orange, and mandarin trees, the pest spreads easily between properties.


Identifying Citrus Gall Wasp

Look for:

  • Swollen, woody lumps (galls) on branches

  • Thin or stunted growth

  • Decreased fruit production

Holding a citrus branch infected with Citrus Gall Wasp showing visible gall damage.
Holding a citrus branch infected with Citrus Gall Wasp showing visible gall damage.

Citrus Gall Wasp Treatment Perth: Prune and Dispose Correctly

The best time to manage Citrus Gall Wasp is late winter to early spring, before adult wasps emerge.

  • Prune out all visible galls

  • Dispose of infected branches in a sealed green waste bin (never compost)

Pruned citrus tree with all infected gall wasp branches removed for proper control.
Pruned citrus tree with all infected gall wasp branches removed for proper control.

Recovery and Prevention Tips

After heavy pruning, your tree needs help to recover and resist future infestations. Here’s what I recommend using:

  1. Seasol – Stimulates root growth and improves overall resilience.

  2. Powerfeed for Citrus Trees – Provides essential nutrients to support regrowth and fruiting.

  3. Kaolin Clay Spray – A natural barrier that deters wasps from laying eggs on fresh shoots.

    Three products for Citrus Gall Wasp care: Seasol, Powerfeed for Fruit & Citrus, and Kaolin Clay.
    Three products for Citrus Gall Wasp care: Seasol, Powerfeed for Fruit & Citrus, and Kaolin Clay.

Ongoing Maintenance

  • Avoid excessive fertiliser in early spring—it encourages soft growth that attracts gall wasps.

  • Regularly inspect your trees from August to December.

  • Apply Kaolin Clay in early spring when new growth appears.


Need a Hand with Your Citrus Trees?

At Manbun Mowing, we offer expert fruit tree care and Citrus Gall Wasp treatment across the City of Canning and surrounding suburbs south of the river. With the right timing, pruning, and products, we can help your trees bounce back better than ever.


🌐 Learn more or book online: www.manbunmowing.com


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