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Medicinal Plants
As demand for medical cannabis and other medicinal crops grows, greenhouse technology continues to evolve. Crops like medical cannabis, Ganoderma (Reishi), and Cordyceps require precise control of light, temperature, humidity, and growth cycles, making them a key focus for growers.
To meet these demands, light deprivation greenhouses have been developed, allowing full control over light cycles and creating completely dark environments when needed.
Modern greenhouses also integrate LED spectrum lighting, CO₂ management, and environmental sensors, optimizing growth conditions and enhancing active compound production.
With ongoing technological advancements, greenhouse cultivation of medicinal crops is becoming more precise, efficient, and controlled, ensuring higher yields and profitability for growers.
Medical cannabis market
Currently, multiple countries and regions around the world have opened up licenses for the cultivation of medical cannabis and industrial hemp. However, cannabis cultivation usually involves strict legal regulations, requiring a series of compliance procedures and permits to ensure that cultivation activities comply with local laws.
As a greenhouse solutions provider, CFGET always respects the policies and regulations of various countries and assists customers in understanding and complying with local planting permit requirements.
16.27B USD
In 2024, the global medical cannabis market size is expected
24.02%.
compound annual growth rate (CAGR)
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Our recommendations come from industry experience and customer feedback. Different greenhouse structures suit different climates, ensuring efficient cultivation.
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What you need to know about agricultural planting!
01.What basic infrastructure is required for a medicinal cannabis greenhouse?
Medicinal cannabis requires a high level of environmental control, so the greenhouse needs a range of infrastructure to ensure stable growing conditions and comply with regulations.
First, an environmental control system is essential, including precise management of temperature, humidity, light, and CO₂ concentration to promote cannabis growth and the formation of active ingredients like CBD and THC. A fully enclosed structure helps isolate external pollutants, reducing pest attacks and improving plant quality.
Secondly, the light management system determines the efficiency of photosynthesis, often using LED or high-pressure sodium (HPS) lamps with timers to simulate natural light cycles. The ventilation system (fans + wet walls) helps maintain air circulation and prevent mold, while an irrigation system (such as drip irrigation or aeroponics) provides precise water supply to avoid over or under-watering, which can harm root health.
Additionally, to comply with legal requirements, medicinal cannabis greenhouses usually need security monitoring systems to ensure the cultivation meets local laws and is strictly supervised.
02.How to optimize light control for medicinal cannabis growth?
Medicinal cannabis has two growth stages: the vegetative stage and the flowering stage, each with different light requirements. Optimizing light is key to improving yield and quality.
During the vegetative stage (18-24 hours of light), plants need long periods of strong light to stimulate leaf growth and root development. Typically, high light intensity (400-700 µmol/m²/s) is provided by LED or HPS lights, with white or full-spectrum LEDs to maximize photosynthesis.
In the flowering stage (12 hours of light + 12 hours of darkness), light cycles need to be strictly controlled to induce flowering. Here, light wavelengths are adjusted, using red and blue LED lights to increase THC and CBD content, while limiting leaf growth to focus energy on bud formation.
To increase light efficiency, reflective films can be installed inside the greenhouse to reduce light loss. An intelligent light control system can also adjust light intensity and duration based on real-time plant needs, improving energy efficiency.
03. How does temperature and humidity management affect the growth cycle of medicinal cannabis?
- Temperature and humidity are crucial factors influencing medicinal cannabis growth. Different growth stages require different environmental conditions.
During the seedling stage, the optimal temperature range is 22-28°C, and humidity should be kept at 65-70% to promote rapid root development. Humidifiers can be used to maintain humidity, and temperatures can be slightly raised to prevent stress from low temperatures.
In the vegetative stage, the best temperature is 20-26°C, with humidity reduced to 50-60% to prevent excessive water evaporation from leaves and reduce disease. A fan + wet wall system can control temperature, while the ventilation system increases air circulation to prevent moisture buildup that could lead to mold growth.
During the flowering stage, the temperature should be kept between 18-24°C, with humidity reduced to 40-50% to minimize the risk of mold infection and improve bud quality. Dehumidification systems and enhanced air circulation can be used to ensure the environment stays dry, preventing mold contamination of flowers.
Precise temperature and humidity management can optimize the growth rate of medicinal cannabis and enhance the content of active ingredients (like CBD and THC), increasing its medicinal value..
04.What irrigation and nutrient supply systems are suitable for medicinal cannabis?
Medicinal cannabis has precise water and nutrient needs, so automated irrigation systems are often used to provide stable water and nutrient supply while preventing root diseases.
Drip irrigation is the most common method, as it controls water quantity to avoid over-watering, which can lead to root rot, while reducing water waste. Aeroponics is a more efficient method, spraying nutrient-rich fine mist directly to the roots, increasing nutrient absorption and promoting root development.
In terms of nutrient supply, cannabis requires key elements like nitrogen (N), phosphorus (P), potassium (K), magnesium (Mg), and calcium (Ca). The ratio of these elements must be precisely adjusted for different growth stages. An intelligent integrated water and nutrient system can automatically adjust nutrient levels based on real-time data, ensuring healthy plant growth and avoiding excessive nutrient supply that could lower medicinal potency.
05. Which medicinal crops are suitable for greenhouse cultivation?
Greenhouses are ideal for growing medicinal crops that have long growth cycles, high environmental demands, and high economic value, such as:
- Root and rhizome herbs: Ginseng, astragalus, Angelica, Codonopsis
- Leafy medicinal plants: Mint, basil, mugwort
- Fungus-based herbs: Ganoderma, Cordyceps, black fungus
- Flowering medicinal plants: Honeysuckle, chamomile, lavender
These crops can benefit from a stable growing environment in greenhouses, avoiding extreme weather conditions, and enhancing the stability and yield of medicinal compounds.
06.Which health-related medicinal plants are suitable for greenhouse cultivation?
Health-related medicinal plants suitable for greenhouse cultivation include:
- Mint: Known for its cooling and heat-relieving properties, suitable for hydroponic or substrate cultivation in greenhouses.
- Chamomile: Used to relieve stress and aid sleep, greenhouses provide stable light, improving active ingredient content.
- Lavender: Extracted for its essential oil used in beauty and medicinal applications, greenhouse environments can extend the growth cycle and increase oil yield.
- Aloe Vera: Used for skin care and anti-inflammatory purposes, greenhouses maintain constant temperature and humidity, speeding up growth.
These plants can achieve higher yields in greenhouses and optimize the concentration of medicinal compounds, increasing their market value.
07.What are the differences in yield and medicinal compound stability between traditional and greenhouse cultivation?
Greenhouse cultivation offers higher yield, more stable medicinal compounds, and fewer pests and diseases compared to traditional outdoor cultivation.
In terms of yield, greenhouse cultivation allows precise control of temperature, humidity, light, and CO₂ concentration, mitigating the impact of external environmental changes, shortening the growth cycle, and increasing yield per unit area.
In terms of medicinal compound stability, greenhouses provide a consistent growing environment, reducing fluctuations in active ingredients. For example, ginseng grown in a greenhouse can have its growth speed controlled, enhancing saponin content and improving medicinal potency.
Additionally, greenhouse cultivation has lower pest incidence, reducing pesticide use, and meeting modern market demands for high-purity, pollutant-free medicinal materials.
08. What is the role of a medicinal herb drying greenhouse?
A medicinal herb drying greenhouse is a special type of greenhouse used for drying, storing, and processing medicinal herbs. Its main functions include:
- Controlling drying speed: By adjusting temperature and airflow, it prevents herbs from drying too quickly or too slowly, which can affect medicinal properties.
- Preventing mold growth: Relative humidity is controlled between 20-40%, reducing mold growth and ensuring the quality of stored herbs.
- Energy-efficient and eco-friendly: Solar energy or hot air circulation systems can be used to lower drying costs and increase efficiency.
The medicinal herb drying greenhouse improves drying efficiency, optimizes medicinal compound content, and reduces the instability of manual drying methods, ensuring that herbs meet market quality standards.
