Differences between Shednet, Polyhouse and Greenhouse

Here are differences between Shednet, Polyhouse and Greenhouse.

1. Shednet (Shade Net House):

A shednet, also known as a shade net house, is a structure covered with shade nets or mesh materials that provide partial shading to the plants inside. It is designed to protect crops from excessive sunlight and heat while still allowing some light to pass through. The main purpose of a shednet is to reduce temperature fluctuations and minimize water evaporation, making it suitable for cultivating shade-loving plants.

When to use a Shednet:

• Growing shade-loving plants and crops that are susceptible to heat stress.
• Protecting nursery plants, seedlings, and young transplants from intense sunlight.
• Cultivating certain vegetables and ornamental crops that benefit from partial shading.

2. Polyhouse (Polytunnel):

A polyhouse, also known as a polytunnel, is a structure covered with UV-stabilized polyethylene or plastic film that allows diffused sunlight to enter while retaining heat and humidity. Unlike shednets, polyhouses create a controlled environment for year-round cultivation of various crops. They provide protection from adverse weather conditions, pests, and diseases, allowing farmers to extend the growing season.

When to use a Polyhouse:

• Cultivating high-value crops and off-season vegetables that require a specific microclimate.
• Growing exotic plants and flowers that need protection from harsh weather.
• Creating a controlled environment to optimize crop growth and yield.

3. Greenhouse:

A greenhouse is a structure with a transparent roof and walls, typically made of glass or polycarbonate, which allows maximum sunlight to enter and traps heat inside. Greenhouses offer a fully controlled environment for plants, with temperature, humidity, and light levels optimized for optimal growth. They provide protection from external elements and allow year-round cultivation of various crops.

When to use a Greenhouse:

• Large-scale commercial horticulture, including the cultivation of vegetables, flowers, fruits, and herbs.
• Growing crops that require specific environmental conditions and precise control over factors like temperature and humidity.
• Extending the growing season and achieving higher yields.

Choosing Between Polytunnel and Greenhouse:

The choice between a polytunnel and a greenhouse depends on various factors, including:

• Crop Type: Consider the specific needs of your crops. If you require a controlled environment with maximum sunlight exposure, a greenhouse might be the better choice. If partial shading is sufficient and you need a cost-effective option, a polytunnel or shednet could be suitable.

• Budget: Greenhouses, especially those made with glass, can be more expensive to construct and maintain compared to polytunnels. Consider your budget constraints and the long-term investment.

• Climate: Evaluate your local climate. Greenhouses provide better insulation and protection from extreme weather, making them suitable for regions with harsh winters or frequent weather fluctuations.

• Purpose: Determine your farming objectives. If you aim to grow high-value crops or extend the growing season for commercial purposes, a greenhouse's precise control and durability might be beneficial. For smaller-scale operations or temporary use, a polytunnel could be a practical choice.

• Size and Space: Consider the available space for the structure. Greenhouses often have a more permanent and substantial footprint, while polytunnels can be more flexible and adaptable to various locations.