• Skip to primary navigation
  • Skip to main content
  • Skip to primary sidebar

Backyard Gardening Australia

  • In The Garden
    • How to Grow Vegetables
    • How to Grow Fruiting Plants
    • How to Grow Herbs
    • How to Grow Ornamental Plants
    • Diseases and Pests
    • Gardening Methods, Ideas and Tips
  • In the Kitchen
    • Recipes
    • Preserving
  • Aquaponics
  • Gardening Attractions and Events
  • Shop
  • Show Search
Hide Search

How to Control Aphids on Citrus Trees

Daniel Dohrman · April 24, 2022 ·

Last year, after returning from a 6-week holiday, we noticed our Tahitian lime tree infested with black aphids. We have had small outbreaks before which are easily controlled but nothing like this. Here is how we control them.

A Lady Bird eating Aphids
A Ladybird eating Aphids

What are aphids?

Aphids are small soft-bodied sap-sucking insects that suck all the nutrients out of your plant, leaving nothing for the plant. Aphids multiply quickly with each aphid producing up to 80 new aphids. An aphid’s life span is about 25 days.

Aphids can do a lot of damage to a citrus tree
Aphids can do a lot of damage to a citrus tree

How to Control Aphids

The best way the control aphids is to catch them early when they have only infested a few leaves or a young shoot. When we find aphids in small numbers, we just squish them, then give the area a high-pressured blast of water. Inspect the plant frequently for the coming weeks for them reoccurring.

Sometimes due to life, business, or just being away on holidays, aphids can take over a plant in a matter of weeks. When we left for our holiday the lime tree had no aphids on it and by the time returned home it was covered on every branch with aphids and the lime tree was looking sad. The first thing we did was to check the plant over for signs of any beneficial insects, such as ladybirds that would take care of the aphids. In our case, we didn’t find any.

We then sprayed the lime tree on dark with a horticulture oil, waited a week and resprayed. This had taken care of most of the aphids and by this time spring was on the approach and the ladybirds and wasps had moved in were taking care of the aphids.

There are a couple of other ways you can control aphids, some of these are soap spray, garlic spray, chilli spray, neem oil or sucking them off with a vacuum cleaner. You will also find ants working in conjunction with aphids, they harvest honeydew directly from them. If you can identify these ants they will be on the same plant and stop them.

My citrus tree looks sick after the aphids

After an infestation has been bought under control on your citrus tree, it will be lacking nutrients and looking quite unhealthy, so we recommend foliar feeding your tree once a week for 3 weeks, as well placing some slow-release organic fertiliser around the base of the tree and watering this in. This will help your tree recover.

How can I prevent aphids in the future?

The truth is aphids will always be there, so there is no way to prevent aphids but you can develop a healthy ecosystem in your backyard to give a home for beneficial insects like the ladybirds, wasp and lacewings to live.

Encouraging lady birds into your backyard will help you control your aphids
Encouraging ladybirds into your backyard will help you control your aphids

Filed Under: In The Garden Tagged With: aphids, citrus, ecosystem

Primary Sidebar

After blanching and cooling allow them to air dry on the sink for a few hours

How to Blanch Broccoli and Cauliflower: A Step-by-Step Guide

The fun part, time to plant the seeds

Starting a New Garden Bed in Sandy Soil: A Step-by-Step Guide

Seed raising mix

Homemade Seed Raising Mix: For Thriving Garden Plants

Check out this Zinnia flower

How to Grow Zinnias: From Blossom to Bliss

We have sowed 120 corn plants with the plan to grow more this year

Summer Vegetable Planting Guide: What we are growing

Shop

Products

  • 4623d290-5fd8-407d-b167-278d84de5b27 Children's Crewneck T-shirt Apprentice Gardener Produce Eater $29.99
  • c8764d21-e0f4-46b6-a799-065c2095b7af Gardening Hoodie - It's Not Hoarding if it's Plants $79.95
  • 218707d7-f1a6-4d5d-9a30-cd5648451405 Gardening T Shirt - It's Not Hoarding if it's Plants $39.95
  • 6a5777d9-944c-4a53-a241-64b8f1d33a72 Gardening Hoodie - To Plant a Seed is to Have Faith in Tomorrow $79.95
  • 386a8158-85ae-45e7-9cdf-e6c47aeaf1fd Gardening T Shirt - To Plant a Seed is to Have Faith in Tomorrow $39.95

Copyright © 2025 · Daily Dish Pro on Genesis Framework · WordPress · Log in