Aqua Meter Sus Tee

Sustee Aqua Meter is unlike any other moisture sensor which stays in the soil and reliably works for 6–9 months, showing you exactly when to water. Its award-winning design is maintenance-free, battery-free, and suitable for all plant types.

Small size is best for 2.4 - 3.5″ diameter pots.

Medium size is best for 4.1 - 7.1" diameter pots.

Large size is best for 7.1 - 10.2" diameter pots.