Are you killing your plants by being too generous on the watering side of things? Or are you one of those neglectful plant parents who simply forget?Pop your fail-proof device in your pot plant and you’ll be at ease for quenching your plant’s thirst!After watering your plant the Sustee device absorbs moisture at the root level, just like your plant, then the level of absorbed water rises, the indicator gradually becomes blue. It takes about 10 minutes to turn completely blue after watering. You will know it's time to water when the colour changes from blue to white. It's really that simple! Sustee stays in place so it does not disturb your growing roots.