Soil-moisture-based water flow
The porous clay cone opens and closes water flow according to soil moisture.
Updated 3 months ago
Blumat
Tropf-Blumat Automatic Watering Carrot Sensor
Ceramic carrot-style sensor that opens and closes water flow according to soil moisture. It is part of the modular Tropf-Blumat drip spike system.
$9.18
CategoryWatering Globes & Spikes
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AmazonIn Stock
$21.59Last updated: 8/3/2026
BuyProduct Highlights
The most important capabilities and tradeoffs at a glance.
Adjustable slow water release
Its setting screw allows the slow, variable water release to be calibrated to plant demand.
Outdoor-ready modular installation
Designed for outdoor use, the sensor inserts into moist soil near each plant and connects to thin drip tubing with a T-connector.
The Blumat Tropf-Blumat Automatic Watering Carrot Sensor is a ceramic soil-moisture sensor for the modular Tropf-Blumat drip spike system, designed to regulate water flow based on soil moisture.
Media Reviews
Independent perspectives and scores from published reviews.
WIRED9/10
Tropf-Blumat Watering System Review: Key to My Gardening Success | WIRED
The reviewer describes the system as an ingenious, reliable, and well-made non-electronic solution that effectively maintains container and balcony gardens throughout the summer. While the initial setup and configuration can be daunting, it is praised for its ability to provide custom, autonomous watering to multiple vessels.
not specified
Happy Hydro
Blumats vs. AutoPots – Which Is Better?
This review compares the Tropf-Blumat to AutoPot systems, noting that while the Tropf-Blumat is an easy-to-install, electricity-free, and effective solution for automated watering, it can be somewhat finicky. It highlights that the system is better suited for commercial settings or specific soil types, and notes that it does not support pre-mixed liquid nutrients as well as other options.
not specified
Unbiased Living
Blumat vs Drip Irrigation on a 40-Square-Foot Balcony Garden - Unbiased Living | Real Reviews & Practical Advice
The review evaluates the Tropf-Blumat against traditional timer-based drip irrigation, praising the Blumat for its water efficiency, lack of electrical components, and ability to adapt to the individual moisture needs of mixed plant types. It notes that the main common failure mode is air bubble formation, which can break the siphon.
not specified
Video Analysis
Product walkthroughs, comparisons, and long-form video reviews.
0:24
Tropf Blumat
Automatic watering
183,884 views · 4 years ago
Sustainable Village – Better Ways to Water · youtube
3:01
Folha Plant Shop - Classic Blumat Tutorial -How to use
The classic for indoor plants. Proven Made in Austria brand quality, tried and tested a million times since its introduction in 1965.
97,218 views · 5 years ago
Folha Plant Shop · youtube
4:29
Blumat Classic & Blumat Easy Watering Systems | How To Get Started!
Do you need help keeping your plants alive or just don't trust anyone to watch over your little babies? Join Aaron as he gets into ...
72,467 views · 5 years ago
Happy Hydro · youtube
13:05
Easy Automatic Watering Setup | Step By Step Automatic Watering System For Garden
In this video, I set up an
24,667 views · 1 year ago
Mr. Grow It · youtube
4:10
Pre-setting the Blumat Sensors (Cap Dialing) - How to dial in carrots quickly and consistently
For large systems, we've discovered a quick and effective way to set up a large number of
13,454 views · 3 years ago
Sustainable Village – Better Ways to Water · youtube
7:20
Blumat drip irrigation, marijuana garden
This video shows and explains some of the benefits and methods of employing the
1,225 views · 3 years ago
thomas eagle mckeever · youtube
Attributes
Detailed specifications and product characteristics.
AdjustabilityYes
Capacity(ml)200 ml
DimensionsTotal length ~230 mm; insertion depth ~15-18 cm (Maxi); clay cone diameter ~20 mm (Min spec cited)
Indoor Outdoor UseOutdoor (intended use); Blumat Classic/Easy recommended for indoor plants (general guidance)
Installation MethodInserted “carrot”/sensor cone into moist soil near each plant; connect thin drip tubing to the sensor via T-connector (for Maxi: insert ~15-18 cm into soil and connect to water-supply tubing with T-connector)
MaterialClay cone (porous ceramic/clay) with a plastic watering head (carrot sensor)
Plant CompatibilityOutdoor plants on terraces, Balcony plants, Plants in greenhouses/polytunnel, Raised beds, Large pots and tubs (Maxi variant), Garden beds with planting depth around 25-30 cm (Maxi)
Price(USD)9.18 USD
Uv ResistanceYes
Water Release RateSlow; variable and adjustable via the sensor’s setting screw/calibration (tensio/valve) to match plant demand
Purchase Options
All current listings across the base product and its variants.
AmazonIn Stock
$21.59Last updated: 8/3/2026
BuyExplore Alternatives
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