Sustee Aquameter: Plant Moisture Sensor Set of 2 (Green, Large)

Meet the Sustee Aquameter, a leave-in soil moisture sensor that stays in the pot for ongoing root-level monitoring. This set of two large, green meters is ideal for bigger containers (designed for pots from 6 to 12 inches) and helps you move beyond guesswork when caring for your plants.

What makes this sensor unique

Unlike traditional meters that you must remove after each check, the Aquameter remains in place, giving you continuous visibility into soil moisture at the root zone. It’s a battery-free, maintenance-free tool, so you can tend to your plants with minimal fuss while keeping your hands clean and your roots undisturbed.

• Root-level sensing for accurate moisture readouts without digging through the soil
• Leave-in design that continuously reports soil moisture directly in the pot
• Color-based indicators: white signals a need to water; blue signals that watering has occurred (varies by soil type)
• Two refillable green sticks included; each core lasts roughly 6–9 months with normal use
• Environmentally friendly, award-winning design with no batteries required

How to use and what to expect

Set up is simple: insert the sensors into your plant’s soil and leave them in place. The device provides a visual cue to help you decide when to water, helping you avoid overwatering and underwatering alike. It’s especially helpful for soils that retain moisture, where traditional quick checks can be misleading. The color change is a quick, intuitive signal you can glance at while you’re tending multiple plants or rotating a houseplant collection.

• Leave the device in the pot for ongoing monitoring without needing to pull it out for each check
• Award-winning, eco-conscious design that supports easy plant care and clean hands
• Best suited for soil types that tend to retain water, reducing guesswork
• Measurements: 10.04 x 0.39 x 0.31 inches (large) to fit 6–12 inch pots
• Designed in collaboration with Tokyo University of Agriculture to refine form and function

What’s in the set

• Two green refillable sustee watering sticks
• Two leave-in moisture meters ready for use
• Replacement cores and simple maintenance-free operation

If you’re looking to bring more consistency to plant care without adding complexity, the Sustee Aquameter offers a practical, non-invasive path to stay in tune with your plants’ water needs. Use it as a flexible tool in your kitchen garden, balcony, or living room plant corner to support healthier growth and a tidier routine.