If you are always worried that overwatering will cause root rot. Now, let us help you solve this difficult problem completely. This professional soil hygrometer can accurately detect the true humidity conditions deep in the soil of potted plants or gardens - something that cannot be achieved by naked eye observation or finger touch. We adopt an innovative large dial design, clearly marking 3 humidity zones and 10 precise scales, making the readings intuitive and easy to understand. Just gently insert the single probe into the soil, and you can immediately obtain accurate humidity data, allowing you to instantly determine whether the plant needs watering. The unique single-probe design not only minimizes damage to the plant roots to the greatest extent, but also hardly brings out the soil when pulled out, keeping the planting environment clean and tidy. It is highly suitable for various planting scenarios such as indoor potted plants, balcony gardens, vegetable gardens and nurseries. Whether you are a novice in flower cultivation or a gardening expert, you can easily get started. The usage method is incredibly simple: insert it into the soil, read the data, and determine the watering. Just 3 steps and you can solve the maintenance problems. Please avoid testing hard soil or liquids. After each use, wipe the probe in time. Do not leave the probe in the soil for more than 5 minutes. Correct use and maintenance can keep the instrument with you for a longer time.