Simply place the moisture meter rod into root ball surrounded by soil for an instant view of the moisture level without getting your fingers dirty. It helps you determine the exact duration of the dry phase in LECHUZA planters without a self watering system, making it easy to prevent under or overwatering while ensuring that plants always receive just the right amount of water. It is suitable for indoor and outdoor use and does not require batteries. KEY SELLING POINTS • Prevents under or overwatering • Easy to use • No batteries required • Precisely measures soil moisture