The short answer

Map each controller zone to the area and plant group it serves. A numbered timer without a map makes later adjustments harder to verify.

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Create a controller companion sheet

Record the zone number, location, plant group and sprinkler or drip type. Have the irrigation professional confirm the map and note any mixed areas that need a different design. Keep the current schedule and date with the sheet.

EPA recommends grouping similar plants in irrigation zones. [1]

“Zone 3: front shrubs” is more useful than “zone 3: ten minutes.” Do not copy a neighbor’s timer settings; check your site, weather and local watering restrictions with the appropriate provider.

Sources

This article was generated by AI using the sources below. Editorial standards.

  1. Watering Tips — EPA WaterSenseSupports the attributed passage: EPA recommends grouping similar plants in irrigation zones. The practical workflow and labeled examples are the publication’s own applications, not source-reported cases. Source checked Sep 8, 2026.

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