Quick verdict
A simple, affordable plant sensor that does exactly what it should. It reports soil moisture, soil temperature, and light levels to Home Assistant via ESPHome. No cloud account, no subscription, no app. Stick it in the soil, connect it to WiFi, and build automations to alert you when your plants need water. At this price, you can put one in every pot without guilt.
Standout: Budget ESPHome plant sensor measuring soil moisture, soil temperature, and ambient light, fully local.
Last checked: 2026-03-22