Smart Irrigation and Garden Automation

Why Smart Irrigation Matters

Outdoor watering accounts for 30-50% of residential water use. A smart irrigation controller can reduce that by 20-50% by skipping watering when rain is forecast, adjusting for soil type and plant needs, and preventing watering during the heat of the day when evaporation is highest.

Smart Irrigation Controllers

These replace your existing sprinkler timer and add internet connectivity and weather intelligence:

• Rachio 3 — The most popular option. Weather Intelligence Plus adjusts schedules automatically. Supports up to 16 zones. Works with Alexa, Google, HomeKit, and Home Assistant.
• Orbit B-hyve — Budget-friendly option. WeatherSense technology, good app, Alexa integration.
• RainMachine — Runs locally without cloud dependency. Excellent for privacy-focused users.
• Wyze Sprinkler — Affordable but capable. 8 zones, weather adjustments.

Installation Basics

Swapping your old timer for a smart controller is straightforward:

1. Take a photo of your existing wiring before disconnecting anything
2. Turn off the water supply to your sprinkler system
3. Remove the old controller and mount the new one
4. Connect the wires to the matching zone terminals (they're labeled)
5. Connect to WiFi through the app and configure your zones
6. Set up each zone with plant type, soil type, sun exposure, and slope

Soil Moisture Sensors

For even smarter watering, add soil moisture sensors that tell your system exactly when plants need water:

• Ecowitt soil moisture sensors — Wireless, affordable, long battery life
• Rachio Wireless Flow Meter — Detects leaks and measures actual water usage
• DIY ESP32 sensors — For Home Assistant users, capacitive soil moisture sensors cost under $5

Garden Automation Beyond Watering

Smart garden tech extends beyond sprinklers:

• Smart outdoor plugs for pond pumps, fountains, and greenhouse heaters
• Temperature and humidity sensors for greenhouse monitoring
• Automated garden lights that turn on at sunset for both aesthetics and pest deterrence
• Weather station integration to log conditions and correlate with plant health