Aphididae

aphids_1551155027397

What are Aphids

Aphids are small, soft-bodied insects, which are usually 2 – 4 mm long. 

Aphids often cluster on young shoots and flower buds or underneath older leaves. There are many different species of aphids which vary in colour from green to yellow and black. 

Aphids attack fruit trees, roses, camellias, chrysanthemums other ornamentals and a wide range of vegetables. Aphids also transmit virus diseases such as broad bean wilt. 

Small colonies multiply rapidly in warm weather, and large infestations can develop in a number of days. Check your plants a couple of times a week at the beginning of warm weather so that aphids can be controlled when populations are relatively small. 

Look out for natural predators such as ladybirds and parasitic wasps. The tiny wasp lays eggs inside the aphid giving it a hard light brown shell like appearance. The ladybird larvae which looks like tiny bird droppings are actually voracious eaters of aphids. Both of these predators will reduce aphid numbers rapidly once they arrive.

 

Symptoms

Buds may fail to open and leaves are twisted and distorted. New growth may be stunted. Because aphids excrete a substance called honeydew, this provides an environment on which sooty mould fungus can grow. Removing the source of the honey dew will usually solve the Sooty Mould problem as well.

 

Plants impacted

  • Fruit Trees
  • Roses
  • Camellias
  • Chrysanthemums
  • Ornamentals
  • Vegetables
aphids_1551155021704

Recommended products


More articles

Whiteflies

These small, white and winged insects can often be found crowded on leaves of leafy greens and vegies. When disturbed, they fly away in a small plume or 'cloud'. Here's how to control whiteflies in your garden.

Ant

Ants do not damage plants directly but sometimes steal freshly sown seed from garden beds and seed boxes. Ants also feed on the sticky ‘honeydew’ substance produced by sap sucking insects such as aphids and scale, and encourage these insects by protecting them from predators.

Sooty Mould

Sooty mould is a fungal disease which presents as a black powdery substance coating plant leaves, stems and twigs usually accompanied by a sticky residue.