Westland's Houseplant Droplet Feeder is a convenient ready to use feed that keeps houseplants healthy with greener leaves.Reliably indicates when watering is neededClear red/blue indicatorAvoids overwateringEasy to useLasts 12-18 monthsWatering is an essential part of growing healthy houseplants that will thrive in your home. Westland's Watering Indicator Stick will help keep your plant well watered by simply telling you when you need to water.How to Use: Push the tip of the watering indicator stick into the centre of the plant rootball. The indicator stick will tell you when your plant needs more water. A red window display means your plant needs water adding, blue means no water needed. Once you have watered your plant the indicator will change colour from red to blue within 2 hours. Only add water if the indicator stick has completely changed to red. Do not twist or pull out the indicator stick during use. We recommend replacing the indicator stick after 12-18 months.