How to Manage Pests

Pests in Gardens and Landscapes

Protecting landscapes

Prevent injuries to plants by fencing off landscape plants beyond their drip line during construction. Avoid compacting soil near trees, and aerate soils that are, or become, surface compacted. Make pruning cuts properly, just outside the branch collar. Keep weed trimmers and lawn mowers away from trunks. Choose plants that are well adapted to local environmental conditions so that they are less likely to be injured by sunlight, temperature, or moisture extremes. Provide proper cultural care so plants are less likely to be injured and better able to tolerate damage.

Damaged or unhealthy trees that may fall over or drop limbs are hazardous. In more natural settings, dead or declining trees provide benefits such as wildlife habitat and recycled nutrients. In urban or recreational areas, hazardous trees can injure people or damage property. Look for dead or dying limbs, wounds, cankers, and mushrooms or other decay fruiting bodies around the tree base or on bark. Some hazards are difficult to detect, such as internal decay or unhealthy roots. Correct any hazardous conditions; replace the plant where necessary.

A hazardous tree
A hazardous tree

Statewide IPM Program, Agriculture and Natural Resources, University of California
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Agriculture and Natural Resources, University of California

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