• Cottony cushion scale insects
  • Cottony cushion scale insect Icerya purchasi scale on kiwifruit
  • Cottony cushion scale insect on ice plant
  • Cottony cushion scale insects
  • Cottony cushion scale insect Icerya purchasi scale on kiwifruit
  • Cottony cushion scale insect on ice plant

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Cottony Cushion Scale

Cottony cushion scale are sap sucking insects with protective coverings that can be found attached to plant leaves and stems.

Identifying

Cottony cushion scale are sap sucking insects that have protective coverings. The protective covering can be hard and waxy to soft and foam-like. The shield like protective cover or frothy covering can make it difficult to identify them as insects. Cottony cushion scales are commonly brown/black with a grey or white cotton wool like covering when they produce eggs.

Cottony cushion scale insects fix themselves to leaves and stems and suck sap. Their waste products are a sweet honeydew that ants and wasps will feed on readily. The sticky honeydew will also encourage moulds such as sooty mould. It may be difficult to see the scale if they are covered by the mould. Infested leaves usually turn yellow. Some scale live beneath bark and are not easily seen.

Solving

To Get Rid of Scale Insects:

Scale insects can be difficult to get rid of but spraying with PLANThealth Insect Hit and/or Organic Insect Control followed by Organic Super Spraying Oil is most effective, killing scale through suffocation. However, do not spray in the middle of the day or in strong sunlight or high temperature as this can cause burning of the plant. It is best to apply to the crawling and young stages of scale insect.

Once control has been achieved PLANThealth Spectrum is a good option for prevention and control of scale and the mould that often accompanies them. They can also be applied before (at least one day) application of Organic Super Spraying Oil.

Control Ants and the Sap Sucking Insects they 'Farm' in Trees, Shrubs and Ornamantals

Apply PLANThealth Insect Hit Granules on the the soil around the roots of affected plants. This kills and prevents ants moving up the plants, and is systemic and taken up by the roots of the plant to control the sap sucking scale and other insects directly.

Did you know

There are many species of scale insect in the family Coccoidea. In New Zealand common pest species include:

  •     Cottony cushion scale - Icerya purchasi
  •     San Jose Scale - Quadraspidiotus pemiciosus
  •     Rose scale - Aulacaspis rosae
  •     Oystershell scale - Quadraspidiotus ostreaeformis
  •     Soft brown scale - Coccus hesperidum
  •     Apple mussel scale - Lepidosaphes ulmi
  •     Greedy scale - Hemiberlesia rapax

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