Disease, Pests & Treatment


There are approximately 100 different diseases that can affect turf grasses. Each turf disease has a specific prescription for its cure and prevention.

Turf grass diseases are very difficult to identify. Grass plants are very small and most diseases are caused many microorganisms that can’t be seen without a microscope.

Diseases may produce spots, circles, patches, rings.


There are two groups of pests:

  • Above ground, e.g. caterpillars.
  • Subterranean insects, e.g. moles and crickets.

They are protected by the soil around them. It is difficult to get the insecticide to subterranean insects, since when the soil is dry they move down into the ground because they need soil moisture.


There are basically three types of treatment for fungicides:

Systemic fungicides
These work best during periods of active grass growth and are absorbed by grass roots and leaves and move into the sap. They can control diseases for 4 to 6 weeks.

Contact fungicides
They work at all times of the year including cooler months when there is less active growth. These work through the soil into roots which distributes to plant and will last 10 – 14 days.

These are powerful bactericides/fungicides but have instantaneous in action and have no residual effect.


Pesticides should only be used when and where they are needed.
Insecticides penetrate insects in three different ways, through the outer covering (skin), through the mouth, or through the breathing holes (spiracles).

For more detailed information on the various common diseases and treatments please consult our resource section.

For application details of fungicides and pesticides please consult our resource section.