Blumat Drip Maxi Watering Sensors – 2 Pack
$22.95
Two Maxi sensors that sense moisture at the root zone, 6 to 7.5 inches below the surface. For large containers and beds with at least 12 inches of soil depth.
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official Blumat USA Distributor
9-inch Tropf-Blumat Maxi sensors that read moisture 6 to 7.5 inches below the soil surface. Deep enough to sense the root zone of mature plants. Designed for larger pots, raised beds, and troughs with at least 12 inches of soil depth. Same demand-based ceramic technology as the standard Tropf-Blumat, just sized for deeper-rooted plants.
Soak the Maxi sensors in water for 15 minutes until fully filled. Water the soil thoroughly. If the soil is dense or root-bound, pre-drill or core a hole the diameter of the cone. Insert the sensor with the cone fully covered, packing soil around it firmly for good contact. Connect the 3 mm drip tube, then adjust the flow at the sensor head once water reaches the plant.
Two 9-inch Tropf-Blumat Maxi sensors with attached 3 mm drip tubes, plus two 8mm T-fittings for connecting each sensor to your supply line.
Best for containers and beds with at least 12 inches of soil depth — large pots, raised beds, planting troughs, balcony tubs, and mature plants with deep root systems. Especially useful where surface soil dries faster than the root zone, or where you want less frequent but more thorough watering cycles.
Orders ship free over $25 in 2-5 days in the continental USA. 30-day easy returns, no questions asked.
Covered by the official Blumat 3-year warranty from the date of purchase. If something does not perform as expected email help@blumatdrip.com.
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Add a Blumat Moisture Meter to your order
Want to know exactly how thirsty your plants are? The Blumat Moisture Meter reads soil suction at the root zone and provides a real number you can act on.
Installation Guide
How to Set Up Your System
Takes just a few minutes. Once set up, your plants water themselves.
Step 1
Prepare the Sensors
Separate the ceramic cone from the green cap. Soak both in cool water for at least 15 minutes. Use a pipette or your thumb to push water into the cap holes and flush out any trapped air. Reassemble underwater so no air gets sealed inside.
Step 2
Water the Soil
Pre-water the pot or bed thoroughly before installation. The sensor calibrates against the current moisture level, so the soil needs to be evenly moist at the start.
Step 3
Place & Connect
Push the ceramic cone into the soil near the root zone until it is fully buried. Cut your 8 mm supply line and insert the included T-piece. Attach the 3 mm drip tube from the sensor to the T-piece.
Step 4
Set the Flow
Open the adjustment screw counterclockwise until water drips visibly. Slowly tighten clockwise until you reach a hanging drop, then tighten two more arrow marks. That sets your baseline.
Important setup note
This 2-pack requires an existing 8 mm supply line and a water source already in place (either a raised reservoir with a tank connector or a hose with a Blumat pressure reducer). If you are starting from scratch, look at a starter kit instead.
First-water check
Come back in 12 to 24 hours. If the soil is too wet, tighten the screw clockwise. Too dry, loosen counterclockwise. Repeat daily until each sensor is dialed in. A Blumat digital moisture meter makes this faster and more precise.
PLANT DRIVEN WATERING
Never Water Your Plants Again
Most watering systems run on a timer. Ours runs on a plant. No timers, electricity, or apps needed. Set it up in 30 minutes with only a pair of scissors. Powering greenhouses and home gardens across Europe since 1965 and now available in the USA.
Soil Stays Evenly Moist
The cone opens the water line when soil dries, then stops as moisture returns.
Each Plant Decides
Every sensor works independently, so thirsty and shaded plants can share one system.
Rain Friendly
Unlike a timer, the system reacts to actual soil moisture after rain or cool weather.
Built to Expand
Add more sensors, tubes and drippers as your porch or garden grows.
Reads Where the Roots Drink
A 9-inch sensor reaches 6 to 7.5 inches into the soil. Sensing moisture at the depth where mature roots actually pull water from. Less guesswork about whether your big plants are getting watered deep enough.
Made for Travel
Set it up before a trip and come home to plants that kept drinking on demand.
What's in the Box?
2x Tropf-Blumat Maxi 9" Sensors
The large-format ceramic sensor and valve for big containers and raised beds. Deeper sensing, higher output.
3mm Drip Tubing
Short sections connecting each Maxi sensor to the 8mm supply line.
Connector Fittings
Push-fit fittings for connecting drip tubing to the sensor and supply line.
Deep Root-Zone Watering
How Blumat Drip Maxi Works
Water Pressure Powers the Supply
The system runs on gravity through a reservoir/rain barrel or connects to a hose spigot with a Blumat Pressure Reducer.
One Line Reaches Every Plant
An 8 mm supply tube runs from your water source past each plant in the system. At every plant, a sensor taps into the line — ready to release water only when its plant calls for it.
Dry Soil Creates Suction
The ceramic tip sits in the soil at root level. As the soil dries, it draws on the water sealed inside the ceramic — creating suction tension that pulls a diaphragm down inside the sensor.
The Valve Opens, Water Flows
The diaphragm opens a tiny valve in the 3 mm drip tube. Water flows from the pressurized supply line, through the sensor, straight to the plant — only the amount the soil is currently asking for.
Wet Soil Closes the Valve
Once the soil is moist again, suction tension releases. The diaphragm rises, pinching the drip tube shut. The plant waters itself again only when it dries out — without you ever lifting a finger.
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Perfect For You If...
You Forget to Water
Keeps moisture levels more consistent, helping protect plants from drying out between waterings.
You Travel Frequently
The system reacts to heat, rain, and plant needs on its own. No more worrying about finding a plant sitter - Relax and enjoy your trip.
You Tend to Overwater
Blumat waters by demand when plants call for it, solving overwatering, the most common problem gardeners face
You Want Healthier Plants
Wet-dry cycling stresses roots and kills soil biology. Blumat sensors maintain a tight, consistent moisture range that keeps roots, fungi, and beneficial microbes thriving
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Expert Support
Our team actually grows with these systems. We help you design the perfect setup for your greenhouse or garden.
3-Year Warranty
We stand behind our products. Every system is backed by a manufacturer's warranty against defects.