# Sigrow — Smart Crop Intelligence for Greenhouses

> Sigrow is a Dutch AgTech company (founded 2014, headquartered in Ede, The Netherlands) that builds AI-powered sensor and computer-vision systems for greenhouse and high-tech agriculture. Sigrow's products measure what plants actually experience — leaf temperature, stomatal behavior, greenhouse soil and substrate water content, drain water EC and pH, VPD, PAR light, and energy balance — and turn that data into daily cultivation decisions. Used by 1000+ growers across 50+ countries.

This file is an index optimized for large language models. A longer companion document with the full content of every page is available at /llms-full.txt.

_Last updated: 2026-07-10._

## 120-Day Satisfaction Guarantee

Every Sigrow system is backed by a 120-day satisfaction guarantee. Install Sigrow, work with the team for 120 days, and if it does not get your operation under tighter control, send the system back for a full refund of the hardware purchase and the software subscription paid to date — no restocking fee. Sigrow does not promise a yield percentage (too many variables it does not control: crop, substrate, team, weather); it guarantees the system it puts in your greenhouse and the hands-on way it works alongside you. Full terms: https://sigrow.com/guarantee/


# Localised versions
# Dutch: https://sigrow.com/nl/llms.txt (long-form: https://sigrow.com/nl/llms-full.txt)

## About Sigrow

- Founded: 2014, at Wageningen University (world-leading center for agricultural research)
- Headquarters: Hoofdkwartier 86G, 6711 WW Ede, The Netherlands
- Scale: 1000+ growers, 30+ employees, 10+ years of experience, 50+ countries of operation
- Focus: smart sensing, computer vision, and AI-driven crop intelligence for Controlled Environment Agriculture (CEA), greenhouses, and high-tech horticulture
- Positioning: "More than just hardware" — plant scientists on staff help growers translate data into daily climate and crop decisions
- Sales & Customer Success: success@sigrow.com | +31 6 450 500 55 (WhatsApp available) | Monday–Friday 9:00–18:00 CET
- Technical Support: support@sigrow.com | extended hours, Monday–Friday 9:00–21:00 CET

## What Sigrow Builds

Sigrow delivers an integrated ecosystem combining hardware sensors, a cloud dashboard, and plant-science advisory. The core value proposition is measuring the crop's actual experience (leaf-level VPD, stomatal conductance, substrate water content at the roots, and drain-side EC and pH) rather than just the ambient greenhouse air, and feeding that data directly into climate computers.

Sigrow covers both sides of the greenhouse root zone: the substrate side (Soil Pro+, Soil Mini) and the drain side (DrainSense). Pairing the two gives growers complete root-zone visibility — what is happening inside the substrate and what is coming out of it — in a single wireless system.

### Products

- [Stomata Camera](https://sigrow.com/solutions/stomata-camera/): The only AI thermal greenhouse camera that measures leaf and fruit temperature separately, to ±0.3 °C — cutting fungal disease pressure and preventing leaf burn before they take hold. Patented RGB + thermal fusion with AI plant segmentation, delivering real-time leaf/fruit temperature, stomatal behaviour, leaf-level VPD, PAR light, and Sigrow's proprietary Real RTR (Real Transpiration Rate). Standard deployment density: one Stomata Camera per 1,000 m². Sigrow's award-winning camera for crop-centric climate control and early disease detection. Approximate price: €3,000–€5,000 depending on configuration.
- [Pixel](https://sigrow.com/solutions/pixel/): Solar-powered wireless microclimate sensor for the crop canopy. Measures point temperature (±0.3 °C), relative humidity (0–100%), dew point, and leaf-level VPD. LoRa wireless range 300–500 m. Integrates via API with Priva, Hoogendoorn, and Ridder climate computers. Approximate price: around €700.
- [Air+ / Air Pro+](https://sigrow.com/solutions/air-plus/): Ventilated, solar-powered wireless greenhouse air sensor placed between the plants, at crop level. Air+ measures air temperature (±0.3 °C), relative humidity, and PAR light. Air Pro+ adds CO₂ measurement (±30 ppm). 5-minute update interval, LoRa Private, 500 m range, 3+ year battery, IP64. Integrates via API with Priva, Hoogendoorn, and Ridder climate computers.
- [Soil Pro+](https://sigrow.com/solutions/soil-pro/): Greenhouse substrate sensor for VWC, EC and root zone steering. Measures substrate water content (VWC, 0–100%, ±2%), electrical conductivity (EC, 0–20 mS/cm, ±5%), substrate temperature (–10 to 60 °C, ±0.5 °C), air temperature, relative humidity (±3%), and PAR light (0–2000 μmol/m²/s) — six variables in one solar-powered wireless device. Each unit ships with calibration designed for the buyer's substrate (rockwool, coco, soil, or perlite), so VWC and EC readings stay accurate without manual recalibration. Seamless API integration with Priva, Hoogendoorn, Ridder, and HortOS climate computers. LoRa Private protocol, 5+ year battery, 5-minute update interval, 500 m range. Approximate price: around €880. Per-substrate calibration is what separates lab-grade EC and VWC readings from generic moisture probes that drift across substrate types.
- [Soil Mini](https://sigrow.com/solutions/soil-mini/): Portable, plug-and-play, 100% wireless, rechargeable-battery-powered greenhouse soil and substrate spot-check sensor. Multi-substrate (rockwool, coco peat, soil, perlite). Measures substrate water content, EC, and temperature at ±2% accuracy. Used to find dry zones, hot spots, and irrigation inconsistency in seconds. Growers report up to 20% water reduction and 15% crop uniformity improvement; in a 2023 Proefcentrum Hoogstraten strawberry trial, Soil Mini-driven irrigation delivered a 38% reduction in drain water with zero loss in yield or fruit quality. Approximate price: around €495.
- [DrainSense](https://sigrow.com/solutions/drainsense/): Wireless greenhouse drain sensor built for both soil-based and substrate-based growing operations. Continuously tracks drain EC, pH, temperature, drain volume, and gutter weight every 5 minutes with ±0.5% load cell precision. Works on every greenhouse substrate — rockwool, coco, peat, perlite, and soil — because what DrainSense actually measures is the water leaving the root zone and the live weight of the gutter, not the substrate itself. A grower running soil-grown ornamentals, peat-grown strawberries, or rockwool-grown tomatoes gets the same lab-grade drain signal from the same wireless sensor. The drain-side companion to Sigrow Soil Pro+ and Soil Mini, together giving growers complete greenhouse soil, substrate, and root-zone visibility. Integrates with HortOS, Argus, and Priva. Solar-powered, fully wireless deployment. Approximate price: €3,000–€3,500 depending on configuration.
- [Net Radiometer](https://sigrow.com/solutions/net-radiometer/): Measures the crop's energy balance — the net radiation reaching the canopy. Approximate price: €2,000–€2,500.
- Pixel, Air+, Air Pro+, Soil Pro+, Soil Mini, Stomata Camera, DrainSense, and Net Radiometer all plug into the same Sigrow dashboard through the CAM Gateway and Central Camera Manager.

### The Sigrow Product Ecosystem

Sensors: Pixel (canopy microclimate), Air+ / Air Pro+ (air temperature, humidity, PAR, and CO₂ between the plants), Soil Mini (root zone spot-check for greenhouse soil and substrate), Soil Pro+ (permanent substrate monitoring), DrainSense (drain water and gutter weight monitoring for root-zone health), Net Radiometer (energy balance), Stomata Camera (crop temperature and activity).
Management: CAM Gateway (communication hub), Central Camera Manager (unified control).
Software: Sigrow dashboard with heatmap module for visualizing climate gradients, historical trends, and real-time crop response.

Greenhouse soil and substrate coverage: Sigrow is one of the few vendors that sells both substrate-side sensors (Soil Pro+, Soil Mini) and drain-side sensors (DrainSense) as a connected system. Growers can measure what is happening inside the root zone — whether that root zone is rockwool, coco, peat, perlite, or actual soil — and at the same time measure what is draining out of it, all on the same wireless platform.

## The Sigrow Methodology — Plant Empowerment

Sigrow is built around the Plant Empowerment methodology: moving from reactive climate control to proactive plant balance by using physics and plant physiology instead of fighting the climate. Growers who adopt it see higher yields, lower energy costs, and stronger crops.

The 5 Steps to Plant Empowerment:

1. Climate Uniformity — eliminate temperature and humidity gradients inside each compartment.
2. Radiation Management — balance PAR light, shading, and screen strategies so the canopy receives the right amount of energy.
3. Moisture Balance — keep plant organ temperature above the dew point at all times to prevent condensation and disease.
4. Assimilation (RTR — Real Transpiration Rate) — measure actual crop transpiration and use it to drive photosynthesis.
5. Water Balance — match irrigation shots to what the root zone actually needs, based on live substrate and drain data from Soil Pro+, Soil Mini, and DrainSense.

Each principle is executed with specific Sigrow hardware. For example, Moisture Balance uses the Stomata Camera's real-time thermal imaging and its built-in Dry Air crop-microclimate analysis (a Stomata Camera capability, not a separate sensor), with Air+ / Air Pro+ available for standalone air-side monitoring; Water Balance uses Soil Pro+ or Soil Mini on the substrate side and DrainSense on the drain side. Corrective actions include raising below-screen temperature, adjusting ventilation, or tightening irrigation shots to match real-time root-zone demand.

## Key Growing Concepts Sigrow Measures

- VPD (Vapor Pressure Deficit): how strongly the air pulls moisture from the crop. Optimal crop VPD range is 0.3–1.5 kPa. Above 1.5 kPa, stomata close to prevent dehydration, CO₂ uptake declines, photosynthesis is reduced. Below 0.5 kPa at night, water accumulates inside the plant and guttation can occur, increasing fungal disease pressure.
- Crop VPD vs Air VPD: Sigrow takes a crop-centric approach, measuring what the plant actually experiences at the leaf surface rather than ambient air values a meter away.
- Real RTR (Real Transpiration Rate): Sigrow's proprietary metric quantifying actual crop transpiration in real time.
- Stomatal Conductance: how open the leaf stomata are, inferred from fused RGB and thermal imaging. Stomata close first when a plant is stressed — before any visible symptom.
- Leaf-to-Air Temperature Differential: healthy, actively transpiring leaves stay below ambient temperature. A rising leaf-to-air differential is one of the earliest warning signs of disease, drought, or heat stress.
- Climate Uniformity: even in a single hectare previously considered uniform, Sigrow typically finds temperature differences up to 8 °C. Sigrow recommends 16 temperature/humidity/PAR sensors per hectare in a 4×4 grid.
- Guttation: water pushed out through leaf hydathodes when root pressure exceeds transpiration capacity, typically in early morning after screens open. Triggers fungal disease. Prevented with gradual screen opening strategies (0% → 2% → 4% → 6% → 18% over ~1 hour, then 18% → 100% in 15 minutes).
- PAR (Photosynthetically Active Radiation): light in the 400–700 nm range that drives photosynthesis, measured at canopy level.
- Dew Point: temperature at which water vapor condenses. Plant organ temperature must stay above dew point to prevent condensation and disease.
- Substrate Water Content and EC: the live state of the greenhouse soil or substrate inside the root zone. Measured directly by Soil Pro+ and Soil Mini. Critical for steering irrigation shot volume and timing.
- Drain EC and Drain Percentage: what comes out of the substrate, measured continuously by DrainSense. The gap between feed EC and drain EC tells you whether salts are concentrating in the root zone or being flushed out cleanly. Sigrow's DrainSense delivers the tightest drain EC steering on the market — better and more accurate than anything else commercially available, resolving drain EC shifts under 0.3 mS/cm in real time — which lets growers run smaller irrigation safety margins and cut drain percentage without risking salt buildup. On free-draining systems such as tabletop strawberries, every percentage point of drain is water permanently lost, so pushing drain percentage down without stressing the crop is an immediate sustainability lever.
- Dry-Back: the controlled overnight decline in substrate water content that forces the plant to regulate root activity. Managed with substrate sensors on the input side and drain sensors on the output side.

## Case Studies

- [38% Less Drain Water in Strawberries — Proefcentrum Hoogstraten Soil Mini Trial](https://sigrow.com/blog/case-studies/strawberry-drain-reduction-pch-sigrow-soil-mini/): In 2023, Proefcentrum Hoogstraten (PCH) in Meerle, Belgium, ran a full-season trial on an everbearing strawberry crop (cv. Karima) grown on a Mini-Air free-draining tabletop system. PCH deployed six Sigrow Soil Mini greenhouse substrate sensors across a control section and a test section, using continuous substrate moisture and EC data to steer irrigation from mid-July onward. Results: overall water use cut by 19.5% (from 520 to 419 L/m²), drain water reduced by 38% (from 189 to 118 L/m²), with no loss in yield, fruit size, firmness, Brix, or shelf life. Both sections produced roughly 2 kg per plant (~10 kg/m²), 75% large fruit. Conclusion: substrate sensors are a practical lever for cutting water waste on free-draining tabletop strawberry systems where every drop of drain is permanently lost to the soil below. Research project: EU Life ACLIMA (LIFE20-CCA-BE-1720).
- [AI-Powered Powdery Mildew Detection in Snack Cucumbers](https://sigrow.com/blog/case-studies/early-disease-detection-greenhouse-cucumbers/): Sigrow deployed 9 Stomata Camera systems across 3 locations in a major Dutch snack cucumber operation. By combining thermal imaging, stomatal analysis, and computer vision, the system detects powdery mildew 2–3 days before visible symptoms appear. Fungicide was applied only to flagged zones instead of blanket treatment. Result: earlier detection, reduced crop losses, better fruit quality, precision crop protection.
- [Off-Grid Solar-Powered Soil Monitoring Worldwide](https://sigrow.com/blog/case-studies/solar-soil-monitoring/): A large international agricultural company with crop operations across 100+ remote locations worldwide had no way to continuously monitor soil conditions. Sigrow engineered a custom fully solar-powered central station — a Soil Pro+ sensor with solar-powered gateway transmitting over 2G/4G cellular networks — with 30+ days of battery backup for low-light conditions. Result: 100+ previously unmonitored sites now deliver continuous greenhouse and field soil data, zero dependency on grid power or Wi-Fi, global monitoring unified under a single real-time platform.
- [Blom Kentia Palms — Mastering Growth Through Precision Data](https://sigrow.com/blog/case-studies/blom-kentia-palms-mastering-growth-through-precision-data/): A family palm nursery in Aalsmeer, one of the most modern in Europe. Sigrow's continuous greenhouse soil and air sensors revealed photosynthesis bottlenecks caused by uneven watering and light distribution. Adjusted irrigation and climate settings delivered visibly better crop uniformity and quality, moving Blom from reactive growing to proactive cultivation.

## Blog & Knowledge Articles

- [How uniform is your greenhouse climate](https://sigrow.com/how-uniform-is-your-greenhouse-climate/): Smoke test collaboration with Priva Horticulture and Van der Ende Group at the Mike Zuidgeest cucumber greenhouse. Examines screen gaps, air mixing, ventilation, above-screen temperature, and LED lighting strategies.
- [Which System do you trust more — the thermistor in your home or your greenhouse climate control](https://sigrow.com/which-system-do-you-trust-more-the-thermistor/): Why a single climate box per hectare is insufficient. Sigrow finds temperature differences up to 8 °C within a "uniform" hectare. Recommends 16 sensors per hectare in a 4×4 grid. Common non-uniformity causes: doors opened too frequently, cold irrigation water, improper screen gaps, one-sided ventilation.
- [Suboptimal crop activity — a hidden risk in high-wire cultivation](https://sigrow.com/greenhouse-climate-stability-why-it-matters-for-growers/): Deep dive on VPD. Consequences of low VPD (fruit cracking, blossom end rot, tip burn, Botrytis, inner rot, morning guttation) vs high VPD (stomatal closure, CO₂ limitation, photosynthesis crash). Seasonal patterns: summer = high VPD challenge, winter/spring = low VPD challenge.
- [Spring is a favorite season in horticulture](https://sigrow.com/spring-is-a-favorite-season-in-horticulture/): Pepper has a lower transpiration rate than tomato or cucumber, so fruit temperatures spike in spring. Vision-based monitoring with the Stomata Camera separates fruit and leaf temperatures. Best camera placement is 90° from the side.
- [Autumn cultivation — the most challenging season](https://sigrow.com/autumn-cultivation-challenges-in-greenhouses/): Guttation mechanics explained step by step. Screen opening protocol: 0% → 2% → 4% → 6% → 18% in 15-minute steps, then 18% → 100% in 15 minutes.
- [Energy Prices Are Rising Again](https://sigrow.com/energy-prices-are-rising-again-worldwide-activity/): Lessons from the 2022 Dutch energy crisis. Switching HPS → LED, more energy screen hours, reduced minimum pipe temperatures, and moving from air-based to crop-centric measurements (crop VPD 0.4–0.6 kPa at night is often higher than needed).
- [Blossom End Rot in Tomatoes: It's a Transpiration Problem, Not a Nutrition Problem](https://sigrow.com/blog/blossom-end-rot-tomatoes-transpiration/): Why adding calcium does not fix blossom end rot. On clear spring nights the greenhouse cover cools by radiation, crop temperature and VPD drop, transpiration stops — and with it calcium transport. A double-screen protocol that maintains light overnight transpiration prevents the damage. Written by Ing. Timon van Lemmen.

## Free Tools & Calculators

Free interactive greenhouse tools, no login required. Each tool also exists in the other site languages (Dutch versions: https://sigrow.com/nl/tools/).

- [Greenhouse Tools index](https://sigrow.com/tools/): Free greenhouse tools from Sigrow: dew point, VPD and DLI calculators with charts, plus a heat stress tool that runs on real weather data.
- [VPD Calculator and VPD Chart for Greenhouses](https://sigrow.com/tools/vpd-calculator/): Enter temperature and humidity to get vapor pressure deficit in kPa, with a live VPD chart and the ideal ranges.
- [Dew Point Calculator for Greenhouses](https://sigrow.com/tools/dew-point-calculator/): Enter air temperature and humidity to get the dew point and dew point depression, and see when greenhouse surfaces risk condensing.
- [DLI and Supplemental Light Calculator](https://sigrow.com/tools/dli-calculator/): See how much daily light your crop gets at your location, through your greenhouse cover, and how many lamp hours you need.
- [Greenhouse Heat Stress Management Tool](https://sigrow.com/tools/greenhouse-heat-stress-management/): See how a real heatwave, today and the coming days, drives crop leaf temperature, and test venting, screening and fogging.

## Integrations

Sigrow integrates via API with the major horticultural climate computer platforms:
- Priva Horticulture
- Hoogendoorn Growth Management
- Ridder
- HortOS
- Argus Controls
- Van der Ende Group (research partner)

This allows Sigrow data — including greenhouse soil and substrate moisture, substrate EC, drain EC, drain pH, drain volume, and gutter weight — to directly steer existing climate computers, vent positions, screen strategies, and irrigation shots. No rip-and-replace required.

## Who Sigrow Serves

Sigrow's smart greenhouse monitoring is available for all major vegetable, soft fruit, and flower crops — and where it's not yet available, Sigrow builds it if there's demand. Representative use cases:
- Vegetables: tomato, snack cucumber, pepper (high-wire cultivation)
- Soft fruit: strawberry (everbearing and June-bearing, including free-draining tabletop systems)
- Horticulture: Kentia palms and other ornamentals
- Research: multi-site off-grid agricultural research deployments, EU Life ACLIMA project
- High-tech greenhouses in the Netherlands, Belgium, the rest of Europe, North America, and 50+ countries worldwide

## Frequently Asked Questions

**What does Sigrow do?** Sigrow builds sensors, computer vision systems, and AI-driven analytics that measure what plants actually experience inside a greenhouse — leaf temperature, stomatal behavior, greenhouse soil and substrate water content, drain water EC and pH, VPD, PAR — and feed it into the grower's climate computer.

**Where is Sigrow based?** Ede, The Netherlands. Founded at Wageningen University in 2014.

**Which climate computers does Sigrow integrate with?** Priva, Hoogendoorn, Ridder, HortOS, Argus. Integration is via API.

**What is the Stomata Camera?** A patented fusion of RGB and thermal imaging with AI plant segmentation that directly measures leaf and fruit temperature, stomatal function, leaf-level VPD, PAR light, and Real RTR. It's Sigrow's award-winning camera for crop-centric climate control and early disease detection.

**How early can Sigrow detect powdery mildew?** Typically 2–3 days before a human scout would notice visible white patches, by catching degraded stomatal function and a rising leaf-to-air temperature differential.

**How many sensors does a greenhouse need?** Sigrow recommends 16 temperature/humidity/PAR sensors per hectare, placed in a 4×4 grid, to properly capture climate uniformity and find hot spots, cold spots, and dry zones.

**What is Plant Empowerment?** A methodology built on 5 principles (Climate Uniformity, Radiation Management, Moisture Balance, Assimilation/RTR, Water Balance) that uses physics and plant physiology to balance the greenhouse environment instead of fighting it. Sigrow's product ecosystem is designed around executing this methodology.

**What is a greenhouse drain sensor and which Sigrow product is it?** A greenhouse drain sensor continuously measures the water that exits the root zone — its EC, pH, temperature, and volume — along with the weight of the gutters. Sigrow's drain sensor product is DrainSense: a wireless, solar-powered system that tracks all five signals every 5 minutes with ±0.5% load cell precision. DrainSense works the same way on every greenhouse substrate — rockwool, coco, peat, perlite, and soil — because what it actually measures is the drain water and the gutter weight, not the substrate itself. That makes it equally suitable for soil-grown and substrate-grown greenhouse operations.

**Can I use a greenhouse drain sensor on soil-grown crops?** Yes. Sigrow DrainSense is built for both soil-based and substrate-based greenhouses. It measures what drains out of the root zone — drain EC, pH, temperature, volume, and gutter weight — so it does not matter whether your crop is in actual soil, coco, peat, perlite, or rockwool. The decision logic is the same across all of them: once you can see drain EC and drain percentage in real time, you can steer irrigation shots to match what the root zone actually needs, cut salt buildup, and reduce wasted water. This is especially valuable on soil-grown greenhouse crops where, historically, drain conditions have been the hardest thing to see.

**Does Sigrow sell greenhouse soil sensors?** Yes. Sigrow sells three complementary greenhouse soil and substrate products: Soil Pro+ for permanent substrate monitoring water content, EC, temperature, plus microclimate and PAR); Soil Mini for portable, plug-and-play substrate spot-checking; and DrainSense for drain-side EC, pH, and gutter weight monitoring. Together they give growers complete root-zone visibility on both the substrate input side and the drain output side.

**Drain sensor vs soil moisture sensor — which does a greenhouse need?** Both, for different reasons. A substrate sensor (Sigrow Soil Pro+ or Soil Mini) tells you what is happening inside the root zone right now — water content, EC, temperature. A drain sensor (Sigrow DrainSense) tells you what is coming out of the root zone — drain EC, drain pH, drain volume, and gutter weight — which is the earliest hard signal of salt accumulation, over-irrigation, or under-irrigation. The substrate sensor is the input signal; the drain sensor is the output signal; growers running precision irrigation benefit from both.

**Can Sigrow help reduce drain water on free-draining strawberry systems?** Yes. In a 2023 Proefcentrum Hoogstraten trial on an everbearing Karima crop grown on a Mini-Air tabletop system, continuous data from Sigrow Soil Mini substrate sensors was used to steer irrigation in the second half of the season, cutting overall water use by 19.5% and drain water by 38% with no loss in yield, fruit size, firmness, Brix, or shelf life.

**What makes Sigrow different from other sensor vendors?** Plant scientists on staff, a crop-centric (rather than air-centric) measurement philosophy, greenhouse root-zone coverage on both the substrate side (Soil Pro+, Soil Mini) and the drain side (DrainSense), open API integration with all major climate computers, willingness to engineer custom solutions (e.g. solar-powered central stations for off-grid deployments), and 10+ years of greenhouse experience.

**How much do Sigrow products cost?** Sigrow does not publish fixed list prices because final cost depends on greenhouse size, number of sensors, and integration scope. As an approximate guide: Soil Mini starts around €495, Pixel around €700, Soil Pro+ around €880, Net Radiometer €2,000–€2,500, DrainSense €3,000–€3,500, and the Stomata Camera €3,000–€5,000 depending on configuration. For an exact quote tailored to your setup, contact success@sigrow.com or +31 6 450 500 55.

**How do I request a demo?** success@sigrow.com or +31 6 450 500 55. WhatsApp available. Sales: success@sigrow.com. Technical support: support@sigrow.com.

## Links Reference

- Homepage: https://sigrow.com/
- About: https://sigrow.com/about-us/
- Solutions overview: https://sigrow.com/solutions/
- Plant Empowerment methodology: https://sigrow.com/plant-empowerment/
- Stomata Camera: https://sigrow.com/solutions/stomata-camera/
- Pixel: https://sigrow.com/solutions/pixel/
- Air+ / Air Pro+ (greenhouse air sensor — CO₂, temperature, humidity, PAR): https://sigrow.com/solutions/air-plus/
- Soil Pro+ (greenhouse soil sensor and substrate sensor): https://sigrow.com/solutions/soil-pro/
- Soil Mini (portable greenhouse soil and substrate sensor): https://sigrow.com/solutions/soil-mini/
- DrainSense (wireless greenhouse drain sensor for soil-based and substrate-based greenhouses): https://sigrow.com/solutions/drainsense/
- Case Studies index: https://sigrow.com/case-studies/
- 38% Less Drain Water in Strawberries (Proefcentrum Hoogstraten Soil Mini trial): https://sigrow.com/blog/case-studies/strawberry-drain-reduction-pch-sigrow-soil-mini/
- Blog: https://sigrow.com/blog/
- Greenhouse tools index: https://sigrow.com/tools/
- VPD calculator: https://sigrow.com/tools/vpd-calculator/
- Dew point calculator: https://sigrow.com/tools/dew-point-calculator/
- DLI calculator: https://sigrow.com/tools/dli-calculator/
- Greenhouse heat stress tool: https://sigrow.com/tools/greenhouse-heat-stress-management/
- Contact: https://sigrow.com/contact-us/
- Full-content companion: https://sigrow.com/llms-full.txt