About This

• This plant hygrometer does not require batteries, just put it into a pot. These are also available in specialty stores, such as chunkies, succulents, and bonsai
• The indicator turns blue when water is enough, and blue turns white when the water runs out
• The core contained is 100% natural fiber and is biodegradable by bacteria in the soil
• The estimated life of the core is about 6 - 9 months in organic soil, 9 - 12 months in inorganic soil, and 1 - 2 years in hydroculture, water moss, and bark
• When the core reaches its life, it can be replaced with a refill sold separately