IPPINKA Soil Moisture Meter Sticks — Bundle of 12 Medium Green Refillable, Leave-In Indoor Plant Monitor

IPPINKA Sustee Aquameter is a leave-in, refillable soil moisture sensor pen sold as a bundle of 12 medium green sticks that shows when houseplants need water by changing color at root level.

Keep over- and under-watering in check with a simple, maintenance-free tool designed for indoor potted plants. The Sustee Aquameter from IPPINKA is a passive moisture indicator you can leave in the pot to monitor soil moisture continuously. Each medium-size stick fits pots roughly 3.5"–6" and uses a replaceable core that indicates whether the soil around the roots is wet (blue) or dry (white).

How does the Sustee Aquameter tell me when to water?

The meter uses a colored core that reacts to moisture near the root zone: blue means the soil is wet, white means it needs water. Because the stick remains in the soil, it shows current conditions without disturbing roots or requiring batteries.

• Color-changing refillable core: blue = watered, white = dry.
• Designed to sense moisture at root depth, not just surface dampness.
• Continuous, leave-in monitoring—no repeated insertion needed.
• Works best in moisture-retentive potting mixes used for many houseplants.

Which pots and plants are these medium sticks best for?

The medium Sustee is sized for pots about 3.5–6 inches and suits small to medium houseplants, including compact succulents and foliage plants. Choose the medium stick when roots and soil volume match the intended depth.

• Medium dimensions: 7.09 x 0.39 x 0.31 inches, fits 3.5", 4", 5", and 6" pots.
• Recommended for small succulents, herb pots, and common indoor ornamentals.
• Not intended for very large containers or deep outdoor beds.
• Use appropriate pot size to ensure the core reaches root zone for accurate reading.

How often do I replace the core, and what maintenance does it need?

Each refillable core lasts roughly 6–9 months depending on watering frequency and soil conditions. The outer stick is reusable: you swap cores and keep the same pen in the pot, reducing waste and ongoing cost.

• Bundle includes twelve refillable medium green sticks—one per pot or backup stock.
• Core life: approximately 6–9 months; replace when color response slows.
• No batteries, no calibration—simple swap and return to soil.
• Made in Japan with collaborative design input from Tokyo University of Agriculture.

Will this work with every soil type or indoor plant?

The Sustee performs best in moisture-retaining soils and typical indoor potting mixes. While suitable for many plant types, soil composition and very fast-draining mixes (like pure pumice) can affect how the core responds.

• Optimized for soils that retain some moisture—typical houseplant mixes.
• Also useful for compact succulents, although very gritty media may reduce sensitivity.
• Not a diagnostic tool for disease—use alongside visual inspection of plant health.
• Helps avoid root disturbance since it remains in place while monitoring.

Who is this for: IPPINKA Sustee Aquameter bundle is aimed at indoor gardeners, busy plant parents, and plant-care beginners who want a low-effort, eco-friendly way to monitor soil moisture across multiple small to medium pots. The refillable design and 12-stick bundle suit households with several houseplants, plant-sitting situations, or growers who prefer a leave-in moisture indicator that minimizes root disturbance and eliminates batteries.