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Survey Weeds—Fruit DevelopmentPeach grove in fruit development

By surveying weeds in late spring, you can identify any species that escaped previous control attempts and determine what perennials are present. Weeds in tree rows must be managed, but annual weeds in row middles may be beneficial. If herbicides were used, surveying identifies any need for changing to another herbicide.

Use the late uspring weed survey form (106 KB, PDF) to record your observations in order to make weed management decisions. Keep these records so that you can track weed population information from year to year to better understand how weed populations change, problems with herbicide resistance, and how effective your management operations have been over the long term.

How to survey your orchard

  • Survey your orchard in late spring or early summer, after summer annuals have germinated.
  • If you use cultivation for weed control, monitor at least 2 weeks before you plan to cultivate.
  • Check for regrowth of perennials a few weeks after cultivation.
  • Sketch a diagram of the orchard and mark areas where perennials are found.
  • Keep records of your survey results. By knowing what species are present, you will be able to make appropriate decisions on cultural and chemical controls.

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