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Experiencing a problem with a tree or shrub? Search through frequently asked questions to find an answer. Or, ask an expert to get customised feedback on any issue you might have. In addition, you can browse our tree tips for details on common topics in your area.

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Biological Control

Biological control, or biocontrol, is a method for managing pest populations and the damage they cause through the use of their natural enemies. The term “natural enemies” refers to organisms that provide suppression of pest populations and includes predators, parasitoids, pathogens, and competitors of the pest species. Effective biocontrol begins with an in-depth understanding of the biology and ecology of the pest species and the biocontrol agents being utilized. When this information is known, biocontrol can be a highly effective component of a larger integrated pest management (IPM) programme. The primary types of biological control include classical, augmentation, and conservation.

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Featured Tip

Trees and shrubs can be damaged by freezing and thawing when there are very cold nights followed by warmer sunny days. As temperatures fluctuate, two common tree injuries can occur.

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