For the first monitoring, one Zigbee temperature and humidity sensor is sufficient. The screen is convenient for checking readings on site, and soil and leakage sensors can be added at any time.
You do not need an expensive branded kit to get started. Choose an option that suits your budget and make sure the listing says Zigbee rather than Wi-Fi or Bluetooth. Search links are neutral, have no affiliate tags, and availability varies by country and seller.
How to read our recommendations
Each card distinguishes equipment used in the GrowerHub installation from models recommended through official Zigbee2MQTT compatibility. A successful check is not a blanket guarantee for every white-label revision of a model.
Most retail Wi-Fi sensors from Tuya and similar ecosystems depend on the manufacturer's cloud and do not let you configure GrowerHub MQTT. Suitable exceptions are devices with open local MQTT configuration and GrowerHub hardware.
Start with compatible equipment
Connect a coordinator and one Zigbee sensor first. You can add more devices later.