Powdery Mildew

Powdery mildew is a common disease infecting a wide range of plants, covering leaves with a dense, greyish powder.

Identify the problem Identify the problem

Powdery mildew diseases are very common. Many vegetables, bedding plants, fruit crops, shrubs and trees can be infected. Typically infected leaves and shoots are discoloured, distorted and covered in a dense, greyish coloured powder like material.

Powdery mildew is most common in Summer and Autumn when the weather is warm and humid.

Downy mildew has similar symptoms except the greyish powdery material is on the undersides of leaves.


SolutionsSolutions

  • Prune out infected shoots of plants and destroy, by burning if possible. Keep plants well spaced and improve ventilation around them.
  • Fruit trees, grapes and vegetables - Apply Organic Super Sulphur as advised on the label instructions.
  • Roses and ornamentals - Apply PLANThealth Spectrum regularly every 14 days to treat infected plants. Once disease is controlled you can use PLANThealth Spectrum as a preventative treatment.
  • Disease is often carried between plants by sap sucking insects. Use Organic Super Spraying Oil to control these insects before they can spread disease.

Did You Know Did You Know

  • Powdery mildew diseases are caused by many different species of fungi in the order Erysiphales.
  • Podosphaera xanthii is the most common

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Solutions for you...

Plant Health Spectrum Plus

Plant Health Spectrum Plus

Triple action fungicide, insecticide and foliar feed for roses and ornamentals.

Organic Super Sulphur

Organic Super Sulphur

Organic control of diseases - powdery mildew, blackspot and rust. Plus control of moss, lichen and mites.

Plant Health Spectrum

Plant Health Spectrum

Insect pest and disease control for roses and ornamentals.

Organic Super Spraying Oil

Organic Super Spraying Oil

Horticultural oil protects your plants from a range of insect pests, mites and diseases.

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