Measure what is happening in the root zone so you can set, verify, and fine-tune irrigation with real data. Use the Blumat Digital Moisture Meter for quick soil-tension readings, Irrometer tensiometers for continuous visual monitoring at specific depths, or electronic sensors and data loggers for remote or real-time tracking. Choose the tool based on how often you want to check moisture, the depth you need to measure, and whether you need logged data.
Moisture Monitoring
Blumat Digital Moisture Meter
Know when your soil needs water. The surface can look dry while the soil below is still wet. The Blumat Digital Moisture Meter measures moisture tension at root depth, so you can base watering decisions on a reading. Battery included. The installed battery should last for years. See how your soil dries between waterings. Check the effect of irrigation adjustments. Use with hand watering or automatic irrigation. What does the number mean? The display reads in millibars (mbar). Lower readings mean wetter soil. As soil dries and holds its water more tightly, the reading rises. Follow readings over time to learn how your soil behaves. The meter measures conditions around its ceramic tip, so depth, placement, and soil contact matter. Do I need a Blumat watering system? ＋No. The meter works independently of your watering system. It measures moisture tension; it does not control water flow. How do I start? ＋Prepare the meter, fill it with water, and install the ceramic tip with good soil contact. Allow time for the meter to respond to the surrounding soil before using the reading to adjust watering. Watch the setup and reset instructions. How do I care for it? ＋Keep the electronic head dry and above the soil. Do not submerge it or leave it in standing water. Learn what your readings mean Our moisture guide explains soil moisture tension, sensor placement, and how to use readings to manage watering. Read the soil moisture guide → Questions about placement or readings?Ask our team.
$89.00
12-inch LT Irrometer — Soil Moisture Meter for Living Soil
Our recommended Irrometer for deeper living-soil beds and large containers. The 12-inch Low Tension (LT) model measures soil water tension farther down in the soil profile, helping you see what is happening below the surface. In beds and containers with soil profiles 12 inches deep or deeper, a dry-looking surface does not tell you how wet the lower soil remains. Measuring lower in the profile helps you make watering decisions based on the moisture where the ceramic tip is installed. Why choose the LT model? Low-tension gauge: 0–40 centibars (cbar), with 1-cbar increments for reading the wetter range used in living soil and potting mixes. Deeper measurement: the 12-inch instrument helps monitor moisture lower in beds and large containers. Continuous analog reading: check soil water tension at a glance without batteries. What the reading tells you The water-filled instrument exchanges moisture with the surrounding soil through its ceramic tip. As the soil dries, the gauge reading rises. As the soil becomes wetter, it falls. The reading represents the soil around the tip, rather than an average for the whole bed. Place the ceramic tip at the depth you want to monitor, fully surrounded by soil with good contact. In deeper beds, a second measurement closer to the surface can help you compare moisture at different depths. Learn where to measure and how to interpret your readings: Measuring & Managing Moisture in Living Soil. Setup and service Fill and prepare the Irrometer before installation. Trapped air and poor contact between the tip and soil can interfere with its response. Recommended: Basic Service Kit Our preferred service kit uses a simple syringe pump to prepare and maintain your Irrometer. It includes Irrometer fluid and instructions. One kit can service multiple Irrometers. Sold separately. View the Basic Service Kit → Prefer a hand pump? The Pump Service Kit is also available separately. Read the Irrometer instruction manual. Looking for another model or length? Shop all LT and SR configurations, or browse Irrometers and accessories.
$115.76
Mini LT Irrometer — Soil Moisture Meter for Small Containers
A small soil-moisture meter for smaller containers. The Mini LT Irrometer uses a slender ½-inch tube and ceramic tip, so you can monitor soil moisture tension with a smaller hole in the growing media. Its compact size makes it a useful choice when a full-size Irrometer takes up too much room. Use it in smaller pots, nursery containers, and shallow growing media where you want a continuous analog reading. Why choose the Mini LT? Small insertion hole: the tube and tip are ½ inch (13 mm) in diameter. Shallow placement: approximately 4¾ inches (12 cm) of insertion depth; overall instrument length is 6¾ inches. Low-tension gauge: reads 0–40 centibars (cbar), also shown as kilopascals (kPa), for potting mixes and other growing media managed in the wetter range. No batteries: the 1½-inch analog dial gives a continuous reading. What the reading tells you The water-filled instrument exchanges moisture through its porous ceramic tip. As the surrounding media dries, the gauge reading rises. After watering, it falls as moisture returns. The reading describes the media around the ceramic tip. Choose a container that can accommodate the tip fully within the growing media, and maintain good contact between the tip and media. Reading units: 1 centibar = 1 kilopascal = 10 millibars. The Mini LT measures soil water tension rather than volumetric water content. For help with placement and interpreting readings, see Measuring & Managing Moisture in Living Soil. Setup and maintenance Fill and prepare the Mini LT before installation. Removing trapped air helps the instrument respond properly. Check the water level and service it as needed. Recommended: Basic Service Kit Use our syringe-style Basic Service Kit for setup and maintenance. This is the same kit we recommend for regular Irrometers; you do not need a separate Mini LT service kit. One kit can service multiple instruments. Sold separately. View the Basic Service Kit → Choose the depth for your container The Mini LT is useful for smaller containers and shallow measurements. For deeper living-soil beds and large containers, see our 12-inch LT Irrometer. You can also shop other LT and SR configurations. Manufacturer specifications
$94.50
Blumat Digital Moisture Meter Kits
Know what’s happening below the surface. Measure moisture where the roots grow. Use the Blumat Digital Moisture Meter to see how your soil dries between waterings and check the effect of irrigation changes. Hand watering: track how wet the soil gets and how far it dries between waterings. Automatic irrigation: check whether water is reaching the soil where you need it. Blumat systems: see the effect of adjustments instead of relying on how the surface looks. Just need the meter? Choose Moisture Meter Only above. Every option includes the same meter. The other options add accessories; they do not change how it measures soil moisture. What does the reading mean? The meter measures soil moisture tension in millibars (mbar): how tightly the soil holds its water. Lower readings mean wetter soil. As the soil dries and water becomes harder to extract, the reading rises. Use readings over time to learn how your potting mix or living soil behaves between waterings. Placement and soil contact matter: a reading describes conditions around the ceramic tip, rather than the entire bed or pot. What comes with each option? Moisture Meter OnlyThe meter without the optional accessory bundle. Meter + Protective CapAdds a cover for the electronic head. Meter + Cap + BatteryAdds the protective cap and a spare CR2032 3-volt battery. Meter + Cap + Battery + Coring ToolAdds the cap, spare battery, and a tool for making the installation hole. Do I need a Blumat watering system? No. Use the meter with hand watering or automatic irrigation. It measures soil moisture tension; it does not turn irrigation on or off. Placement and getting a useful reading Prepare and install the meter using the setup video below. Position the ceramic tip at the depth you want to monitor, with good contact between the ceramic and surrounding soil. Allow the meter to settle after installation before using the reading to make watering decisions. The water inside the meter needs time to respond to the surrounding soil. Keep depth and placement consistent when comparing readings. Follow changes over time rather than making a large irrigation adjustment from one isolated reading. Care, water protection, and resetting Keep the electronic head dry. Do not submerge it or leave it in standing water. If using a protective cap, keep it above the soil. Seating it into the soil can trap humidity around the electronic head. Download the meter reset instructions. Watch the setup and reset demonstration Want to understand the readings?Read our guide to measuring and managing moisture in living soil. Need help with your setup?Ask our team about placement and using your meter.
$89.00 - $110.00
Voltage Irrometer 12"
Information you can use, when you need itMeasure the soil moisture available for your plants and automatically transmit to an IrroCloud Monitor. This tensiometer measures moisture levels in centibars and gives you the same information as typical analog versions you have to see in person. You can hook up to 6 of these to every IrroCloud Monitor and see the data on your smart phone, desk computer, or laptop anywhere in the world. The user-friendly IrroCloud software lets you see the data in many ways—graphs, averages, individual sites, rain events, and several other useful configurations, turning the data into actionable information.
$180.86
IRROMETER Company, Inc. IrroCloud Monitor IC-10-IR
Real-time, accurate data showing you the moisture levels at each sensor in your system - too wet, too dry, or just right! It not only gives you the here-and-now information but also has an adjustable timeline for historic and/or specific dates and times. For example, you can start with a 3-month graph and then zoom in on any day and time.Although very simple, easy to use and interpret, it still provides vital, accurate, and critical information. It even tells you how many hours and minutes your irrigation system was on as well as rain gauge information (if you get that option).The four C batteries that normally last more than 2 years power the IrroCloud which connects with up to 6 Voltage Irrometers for soil moisture readings. These sensors report directly to the IRROcloud platform without any need for additional gateways or devices. If not the most, at least one of the most simple, affordable, and reliable solutions for automatically collecting sensor data and storing it in the cloud, for quick access at any time. Since the IrroCloud doesn't require an external power source or even a solar panel, you can easily install it in even the most challenging fields and orchards.The IRROcloud web application provides an intuitive interface with a quick reference dashboard and graphing suite.
$1,270.50
Irrometer Watermark Soil Moisture Sensor, 15'
Standard WATERMARK Soil Moisture Sensor. For use with all crops. To be used with WATERMARK Meter, Monitor, Voltage Adapter or a compatible device. Reads electrical resistance in 0-200 centibar (cb) and kilopascal (kPa) range. Comes standard with half inch stripped and tinned ends. 15' (4.5 m) length This sensor consists of a pair of highly corrosion resistant electrodes that are embedded within a granular matrix. A current is applied to the WATERMARK to obtain a resistance value. The WATERMARK Meter or Monitor correlates the resistance to centibars (cb) or kilopascals (kPa) of soil water tension. The WATERMARK is designed to be a permanent sensor, placed in the soil to be monitored and "read" as often as necessary with a portable or stationary device. Internally installed gypsum provides some buffering for the effect of salinity levels normally found in irrigated agricultural crops and landscapes. Click here for Irrometer's instruction manual.
$53.55
Irrometer Low Tension (LT) Model, 18"
The IRROMETER Model LT (Low Tension) tensiometer was designed to operate in coarse sandy soils and non-soil growing media. With a range of 0-40 centibars (cb) or kilopascals (kPa), this instrument is for use in situations where tensions above 30 cb (kPa) are rarely expected. Gauge increments of 1 cb (kPa) provide a benefit where finer resolution near saturation is needed. This model instrument is also well suited for conditions where rapidly changing soil moisture conditions need to be observed. The "Quick-Flo" ceramic tip is colored blue for easy identification. Model LT IRROMETERS can be used for manual measurement and tracking of soil moisture status in coarse sandy soils and growing media. When equipped with optional electronic output and data logging equipment, measurement and tracking can be done automatically. The low tension vacuum gauge on this model can be replaced with electronic measurement options, or automatic switching devices which can activate peripheral equipment at desired soil water tension levels. See the "Automation and Output Options" specifications for more details. The Model LT is the best choice for container media such as peat, bark, sand, perlite and vermiculite. It can also be used in any soil when the moisture is being managed close to field capacity. Click here for Irrometer's instruction manual.
$119.70
Blumat Digital Moisture Meter - Top Replacement Only
The Blumat Digital moisture meter is a super accurate water moisture reader that measure the moisture content of your plant at root level. This is the replacement top for the moisture meter and is great for making an old item brand new! DO NOT WET THE DISPLAY. Moisture can cause damage to the LCD display. If using outside or in conjunction with hand-watering or foliar feeds, use our cap here.
$66.00
$4.97
Irrometer Low Tension (LT) Model, 6"
The IRROMETER Model LT (Low Tension) tensiometer was designed to operate in coarse sandy soils and non-soil growing media. With a range of 0-40 centibars (cb) or kilopascals (kPa), this instrument is for use in situations where tensions above 30 cb (kPa) are rarely expected. Gauge increments of 1 cb (kPa) provide a benefit where finer resolution near saturation is needed. This model instrument is also well suited for conditions where rapidly changing soil moisture conditions need to be observed. The "Quick-Flo" ceramic tip is colored blue for easy identification. Model LT IRROMETERS can be used for manual measurement and tracking of soil moisture status in coarse sandy soils and growing media. When equipped with optional electronic output and data logging equipment, measurement and tracking can be done automatically. The low tension vacuum gauge on this model can be replaced with electronic measurement options, or automatic switching devices which can activate peripheral equipment at desired soil water tension levels. See the "Automation and Output Options" specifications for more details. The Model LT is the best choice for container media such as peat, bark, sand, perlite and vermiculite. It can also be used in any soil when the moisture is being managed close to field capacity. Click here for Irrometer's instruction manual.
$111.83
$2.04
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