Sustee Plant Soil Moisture Meter

From IPPINKA: Sustee Aquameter (Moisture Sensor) conveniently changes color to notify that your plants need to be watered. This multi-award-winning design is maintenance-free and works with all types of plants. Collaborated with Tokyo University of Agriculture to improve the design and function of each stick.

White color indicates plant needs watering; blue indicates it has been watered. No batteries required. After about 6-9 months, Sustee insert will need to be replaced in order to work optimally.

Materials: polycarbonate (main body), non-woven fabric that can be broken down by microorganisms.

Dimensions: Small - 0.4 x 0.3 x 4.7″ (best for 2.4 - 3.5″ diameter pots); Medium - 0.4 x 0.3 x 7.1″ (best for 4.1 - 7.1″ diameter pots); Large - 0.4 x 0.3 x 10″ (best for 7.1 - 10.2″ diameter pots)

Details: Made in Japan