Smart Irrigation Automation

Home Assistant automation blueprint for intelligent garden irrigation from 1 to 8 sections.

Prepared by Smart Service.

Import Blueprint

Manual import URL:

https://github.com/SmartServicePL/smart_irrigation_automation/blob/main/blueprints/automation/smart_irrigation_automation/smart_irrigation.yaml

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Smart Irrigation

The blueprint calculates irrigation need and runtime independently for every section. It accumulates a modeled water deficit from plant demand, soil, temperature, sunlight, rain and optional soil moisture. A section starts only after its deficit reaches the calculated dose threshold.

The target cycles-per-week setting defines the preferred depth of one irrigation cycle. It does not assign weekdays and never forces watering merely because a scheduled day arrived. With Rain Bird RC2, the last confirmed completion time is persisted by the integration and used by the next decision.

Supported section count is configurable from 1 to 8. Sections above the selected count stay in the blueprint configuration but are ignored by the automation.

Rain Bird is the primary target, with detailed profiles for 5000/3500 rotors, 1800 sprays, R-VAN rotary nozzles and XF dripline. Generic Rain Bird, Hunter and custom mm/h profiles are still available.

For native Rain Bird RC2 switch entities, the blueprint automatically uses rainbird_rc2.start_zone and passes the calculated runtime in minutes. Other switch integrations continue to use standard switch.turn_on.

The blueprint waits for the valve or switch to confirm on/open before reporting that watering started. A missing start confirmation or an early controller stop is reported as an irrigation failure instead of a completed section.

Optional logging writes the deficit, start threshold, watering decision and confirmed duration to Home Assistant Logbook and persistent notifications.

Documentation:

• Smart irrigation setup

Blueprint path:

blueprints/automation/smart_irrigation_automation/smart_irrigation.yaml

Requirements

• Home Assistant 2025.1.0 or newer.
• One valve or switch entity per irrigation section.
• A weather entity that supports daily forecast.
• Optional local weather entity, rain sensor, rain amount sensor, temperature sensor, wind source, UV/sunlight source and soil moisture sensor.
• Optional Logbook and persistent notification logging for irrigation diagnostics.

Privacy

Do not publish Home Assistant storage files, access tokens, exact home address, raw API responses or screenshots showing private garden details.