SUStee is a revolutionary watering checker which is changing the way we water our plants!Developed, designed and made in Japan, SUStee is the first and only watering checker for home use, which is based on the pF value, a value which is well known among professional plant growers and in academic circles.There is a favourable moisture level shared by all plants. The pF value refers to the ability of a plant to extract water from the soil. SUStee is designed to change its color from blue to white when this favourable moisture level is reached. This way the plant owner knows exactly when the time for watering has come and can therefore avoid under watering and especially over watering the plant.SUStee was born as a result of several years of intensive research and studies, in close collaboration with the Tokyo University of Agronomy and Japanese farmers. It has also been awarded several international awards for its design and function.SUStee is already being enjoyed by many plant lovers worldwide.