How accurate is the Stomata Camera?

The Stomata Camera reads leaf and fruit temperature to ±0.3 °C, using patented RGB and thermal fusion plus AI plant segmentation. That is the tightest leaf- and fruit-temperature accuracy available on a commercial greenhouse camera, and it is what enables early disease detection and precise leaf-level VPD steering.

What does the Stomata Camera measure?

Leaf temperature, fruit temperature, stomatal behaviour, leaf-level VPD, PAR light, and Sigrow's proprietary Real Transpiration Rate (Real RTR). Unlike air-based sensors, it reads the real surface temperature of leaf and fruit in the frame, separated by AI plant segmentation.

Can the Stomata Camera detect and prevent fungal diseases?

Yes. It reads leaf temperature and air temperature in real time, so it knows when conditions are approaching condensation — the trigger for powdery mildew, botrytis and other common diseases. Growers get the window to adjust climate before water ever forms on the leaf. When disease pressure does develop, the camera flags it two to three days before visible symptoms, so you can spot-treat instead of spray.

How is a Stomata Camera different from a generic greenhouse camera?

A generic greenhouse camera records the row — useful for time-lapse and crop documentation, not for climate decisions. The Stomata Camera is a crop-monitoring camera: patented RGB and thermal fusion with AI plant segmentation isolates leaf from fruit, then reads their real surface temperature in real time. It turns vision into plant-physiology data.

How does computer vision in agriculture work in the Stomata Camera?

Computer vision in agriculture, in this context, means using AI plant segmentation on fused RGB and thermal imagery to identify leaf and fruit in the frame and report a per-object surface temperature. The Stomata Camera is the reference implementation of that approach for commercial greenhouses.

Stomata Camera — AI Thermal Camera for Greenhouses

Name: Sigrow Stomata Camera
Brand: Sigrow
Availability: InStock

Trusted by high-tech growers and horticultural
researchers worldwide

Standard Sensors Don’t Tell the Full Story

Most greenhouses still rely on air temperature and humidity to guide climate decisions. But plants do not experience the greenhouse the way sensors do. This disconnect creates blind spots that lead to hidden disease risk, unnecessary energy use, and avoidable crop stress, especially when decisions are not based on direct plant measurement.

Rely on Air temperature
Missing early Microscopic condensation

Hidden Condensation

Microscopic condensation forms on fruit and leaves long before it’s visible. Without direct plant temperature measurement, fungal disease pressure builds silently while climate data still appears safe.

Transpiration (assumed)
CO₂ uptake (assumed)

Closed Stomata

Plants close their stomata due to stress even when air conditions seem optimal. This reduces stomatal activity, transpiration, CO₂ uptake, and photosynthesis, without triggering alerts in standard climate control systems.

Standard greenhouse climate sensors missing critical plant-level data

2 inputs (Air T°, RH)
No Plant-confirmed action

Wasted Energy

Heating and ventilation decisions based only on air temperature often overshoot actual plant needs. This results in unnecessary energy consumption without improving plant activity, growth, or crop performance.

Patented Fusion Technology

The Stomata Camera uses patented fusion technology that combines RGB imagery with thermal data in a single device. This enables a crop-centric approach through direct plant measurement of leaf and fruit temperature at crop level, delivering insights that are impossible to achieve with traditional greenhouse sensors.

Averaged surface readings mask true plant stress and activity.
No fruit–leaf differentiation hides condensation and cracking risks.

Fruit Temp
22.4°C

Leaf
21.5°C

RGB + Thermal Fusion

This is thermal imaging built for plants, not buildings: high-resolution RGB captures plant structure and context, while thermal imaging measures surface temperature. Together, they provide accurate, real-time insight into plant activity inside the greenhouse, supporting a crop-centric approach to climate control.

Fruit vs Leaf Separation

The system distinguishes between fruit and leaf temperature instead of averaging surfaces. This reveals condensation risk, fruit cracking risk, and plant stress with far greater precision.

AI-driven Segmentation & Accuracy

AI-based image segmentation automatically identifies plant organs, removes background noise, and ensures consistent accuracy across crops, growth stages, and varying light conditions.

How it works

Our greenhouse camera captures multiple plant-level metrics in real time, providing growers with actionable insights.

Capture Thermal & RGB Images

Leaf temperature and plant structure are recorded simultaneously.

Step 1: Capture thermal and RGB images of greenhouse plants

Fuse Images with Calibration

Thermal data is aligned with RGB using a dry-leaf reference for accuracy.

Step 2: Fuse thermal and RGB images with precise calibration

AI Identifies Plant Parts

Leaves, flowers, and fruit are automatically recognized and separated.

Analyze Leaf Temperature Over Time

Min, average, and max leaf temperatures are continuously tracked.

Step 4: Analyze leaf temperature trends over time

Detect Stress & Support Decisions

Early plant stress is identified to guide precise climate actions.

Step 5: Detect plant stress and support irrigation decisions

See the Difference Sigrow Makes

The Stomata Camera System has given us a new level of insight into our crop. By measuring leaf temperature at multiple levels, we were able to identify distinct microclimates. Making these microclimates visible has allowed us to adapt our irrigation in a much more targeted way. This data is actively used by our research team on a daily basis to achieve more precise irrigation strategies and better crop steering.
Lisanne Meulendijks
KUBO Group
I know the Sigrow products right from the start! In the moment i decided to start my own company, i didnt had any doubts in which climate station i would choose. The stations work amazingly, information is really easy to read and the software is very friendly user! Also working alongside with the support team makes you going to another level of growing!!
Bruno Maciel
Great company making great sensors! Highly knowledgable team who are very willing to help!
Seif Salama
After several years of experience using Sigrow stations, I can confidently say they are top-quality products. The integration of Air Pro (climate) and Soil Pro (soil) allows us to precisely understand the direct relationship between environmental conditions and crop response. Thanks to this technology, we have increased our operational efficiency and developed a long-term strategic vision based on real-time data.
Alfred Cord
Google Review
The Sigrow cameras have proven extremely useful for showing differences in plant temperature on sunny days. We clearly see a lower plant temperature of 3 to sometimes as much as 7 degrees under the Voltiris modules — a huge advantage for the crop.
Alja Van Der Schuren, PhD
Horticultural Customer Success Manager, Voltiris
We’ve been using the Sigrow platform and sensors with great pleasure for several years now. It’s a pleasure to work with Javier and the team. The sensors give us a quick overview of how the crop is doing. The platform is robust and reliable in its uptime.
Kwekerij Verboom
Approximately half a year ago I used for the first time one of the pixel sensors in my propagation greenhouse. Now I can get plenty of information about the conditions that the plants are growing and even more about the plants themselves. Furthermore the wireless technology and the friendly to the user environment on the server lead me to transition from my previous data tracking system to using sigrow’s sensors in every compartment of the greenhouse.
Agrokipos
Propagation Greenhouse

Complete Plant Intelligence

One greenhouse camera delivers multiple plant-level measurements in real time.

Leaf temperature

22.5 °C

Leaf Temperature

Direct measurement of leaf surface temperature reveals plant stress, reduced transpiration, early stomatal closure, and risks such as burned leaf edges that air sensors can’t detect.

Fruit Temperature

18.9 °C

Fruit Temperature

Continuous fruit temperature monitoring identifies condensation risk, fruit cracking risk, and microclimate differences that directly impact fungal disease pressure and fruit quality.

Crop-Level VPD

0.85 kPa

Leaf Temp
Fruit Temp
Crop VPD
Stomatal State

VPD and relative humidity analysis from plant-level thermal data

VPD & Relative Humidity

By combining plant temperature with air data, the system measures true VPD at crop level, enabling more accurate climate and energy decisions based on actual plant activity rather than assumptions.

PAR Light

integrated with plant temperature and VPD

PAR Light

Integrated PAR light measurements provide essential context for plant response, linking radiation, temperature, transpiration, and CO₂ uptake in a single dataset.

Real RTR (Real Transpiration Rate) reads how hard your crop is actually working, from leaf temperature, incoming radiation, and the crop’s own microclimate. Growers use it to steer the crop generatively or vegetatively.

The Stomata Camera reads leaf and fruit temperature to ±0.3 °C, and it reads each separately. That precision is what lets it reveal plant stress, condensation risk, and energy loss that an averaged air sensor cannot detect.

By tracking fruit and leaf temperature continuously, the camera flags the microclimate conditions that drive fungal disease before symptoms are visible. Across three Dutch cucumber sites, nine Stomata Cameras flagged powdery mildew risk two to three days ahead of visible symptoms, which is days of lead time on a spray decision rather than hours.

Yes. The Stomata Camera integrates seamlessly with the major climate computers through their API, including Priva, Hoogendoorn, Ridder, HortOS, and Argus. There is no rip and replace: it adds plant-level temperature, VPD, and Real RTR data to the system you already run, so you can automate screen and vent decisions on real plant data.

The Stomata Camera is plug-and-play. It runs on 4G, so the only thing you need at the camera is power. It integrates with major climate computers via API, allowing you to automate screen and vent controls based on real plant data.

The intuitive interface of the Stomata Camera allows for easy navigation and setup. It features real-time monitoring, customizable alerts, and a dashboard that provides actionable insights into plant health.

Ready to See Your Plants Differently?

Request a personalized demo and discover how the Stomata Camera can transform your growing operation.

120-Day Satisfaction Policy

Try Sigrow for 120 days, risk-free. If it does not get your operation under tighter control, send the system back for a full refund of the hardware and the software subscription paid to date — no restocking fee.

We can offer this because the system works. Install it, run it for 120 days, and decide for yourself — the risk sits with us, not you.
Rutger Vreezen
Plant Scientist & Customer Success Specialist

Sigrow plant scientist reviewing greenhouse sensor data with a grower

Sigrow dashboard showing real-time greenhouse climate and crop data

We do not promise a yield percentage — your crop, substrate, team and weather are yours. We promise the system we put in your greenhouse, and the way we work alongside you to make it earn its place. Not the right fit within 120 days? Send it back, no questions, no restocking fee.

Read the 120-day promise

Sigrow Stomata Camera for leaf and fruit temperature monitoring

We’re here to support you.

Questions, assistance, or just want to chat – reach out!

+31 6 450 500 55 success@sigrow.com WhatsApp Book a Consultation

Sigrow Stomata Camera hardware – thermal imaging device for leaf and fruit temperature measurement

Stomata Camera — The Thermal Greenhouse Camera for Crop Monitoring

Patented Computer Vision for Leaf & Fruit Temperature Monitoring

Trusted by high-tech growers and horticultural
researchers worldwide