Sustee Soil Moisture Sensor - Large (Pots 18cm+)

Product Description

Give your bigger plants the care they deserve.

The Large Sustee Soil Moisture Sensor makes it easy to know exactly when your larger plants need watering. Designed in Japan, this clever sensor measures moisture right where it matters most, at the roots, so you can water with confidence instead of relying on guesswork.

Simply insert the Sustee into your potting mix and leave it in place. When the indicator is blue, your plant still has enough moisture. Once it turns white, it's time to water. No batteries, no apps and no complicated gadgets.

Perfect for pots 18cm and larger, the Large Sustee is ideal for feature plants and larger indoor specimens, helping you maintain healthy roots and thriving foliage with less effort.

Why You'll Love It

• Takes the guesswork out of watering.
• Perfect for pots 18cm and larger.
• Reads moisture directly at the root zone.
• Helps prevent overwatering and underwatering.
• Colour-changing indicator is easy to understand.
• No batteries, charging or apps required.
• Reusable with replaceable natural cores.
• Designed in Japan.

The Details

• Brand: Sustee
• Size: Large
• Recommended Pot Size: 18cm and larger
• Indicator: Blue = Moist | White = Time to Water
• Response Time: Approximately 10–20 minutes
• Designed in: Japan
• Power Required: None

Why We Love Sustee

We've tried plenty of ways to check soil moisture over the years, but Sustee has become one of our favourites. It quietly stays in the pot and lets your plant tell you when it's thirsty, simple, reliable and easy to understand.

• Stays in your pot for continuous monitoring.
• Measures moisture at the root zone.
• No batteries or electronics to worry about.
• Clean, discreet design.
• Trusted by plant lovers around the world.
• Helps grow healthier, happier plants.

Good to Know

• Works with most premium potting mixes.
• Not suitable for pure LECA, perlite, pumice, sand or hydroponic systems.
• Replace the natural core every 6–12 months for best performance.
• Suitable for both indoor and outdoor potted plants.

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