How to Manage Pests

Use this key to identify your weed species

This key includes the most common weeds found in California lawns. Other species may occur but are not of major importance in turf. Because flowering parts are often mowed and not seen in turf, this key was developed using vegetative characteristics. Identifying weed species is essential for choosing appropriate management practices.

• Click on illustrations that resemble your weed.
• Work through the key until you get to a summary page of your weed.
• Link to Pest Notes from many summary pages to see specific management practices.

Begin key

Identification tips

• Distinguishing broadleaves, grasses, and sedges
• Grasses
• Sedges
• Broadleaves

Already know your weed problem? Go directly to your species:

• Weeds in key