Should a Greenhouse be in Full Sun or Shade?

When cultivating plants in a greenhouse, the right placement impacts their growth. So, should it be in full sun or shade?

A sun-drenched garden greenhouse offers ample light and warmth. Meanwhile, a shaded environment can provide respite from scorching temperatures. Finding the optimal balance between the two is essential.

In this blog, we will explore the advantages of both full sun and shade for greenhouses. Read on and learn the important considerations to keep in mind.

Benefits of Full Sun for Greenhouses

BillyOh Harvester Walk-In Aluminium Polycarbonate Greenhouse
BillyOh Harvester Walk-In Aluminium Polycarbonate Greenhouse

Here are some key reasons why ample sunlight is beneficial for greenhouse cultivation:

Enhanced photosynthesis

Sunlight is the primary source of energy for plants. Placing a greenhouse in full sun ensures that plants receive maximum exposure. It allows them to harness the energy needed to produce sugars and grow. With abundant sunlight, plants can efficiently convert carbon dioxide into oxygen. This promotes robust growth and development.

Increased solar heat gain

Full sun exposure leads to greater solar heat gain within the greenhouse. Sunlight penetrates the transparent walls and roof of the greenhouse, warming the interior. This solar heat gain creates a favourable microclimate that encourages plant growth. It’s especially beneficial in cooler climates or during colder seasons. The increased temperature helps create optimal growing conditions, allowing plants to thrive.

Reduced humidity levels

Sun-drenched greenhouses often experience lower humidity levels compared to shaded environments. The combination of sunlight and warmth helps evaporate excess moisture. Plus, reduce humidity inside the greenhouse.

Lower humidity minimises the risk of fungal diseases and moulds. Additionally, it prevents excessive moisture accumulation on plant foliage. Overall, this lessens the likelihood of rot or other moisture-related issues.

Extended growing seasons and higher crop yields

Placing a greenhouse in full sun extends the growing season. Meaning you can cultivate plants beyond their natural outdoor limits. With additional warmth and light, plants can be started earlier in the spring. Then, it continues growing well into the fall or even winter, depending on the climate. This extended season can result in higher crop yields.

Advantages of Shade for Greenhouses

BillyOh Expert Pent Growhouse
BillyOh Expert Pent Growhouse

Here are some advantages of a shaded greenhouse:

Heat reduction

A shaded greenhouse can help prevent excessive heat buildup, whether it’s a metal or wooden greenhouse. Direct sunlight can cause the temperature inside to soar to potentially harmful levels. This is particularly the case in regions with hot climates or during the summer months.

By providing shade, the intensity of sunlight can be reduced. This can be in the form of shade cloths, lattices, or natural structures like trees. Such a solution reduces the need for extra cooling systems. Overall, it helps create a more favourable environment for plant growth.

Protection from sunburn and heat stress

Direct sunlight can be detrimental to certain plant species. For instance, those that are more sensitive or have delicate foliage.

A shaded greenhouse provides protection from intense sunlight, preventing sunburn and heat stress. This is important for plants that require cooler and shadier conditions to thrive. Sensitive plants can avoid the risk of damage caused by excessive heat. Most importantly, it enables them to grow healthier and reach their full potential.

Growing shade-tolerant crops

A shaded greenhouse provides an ideal setting for cultivating shade-tolerant crops. Some plant species naturally thrive in low-light or partially shaded conditions.

The key here is to create a greenhouse environment with reduced sunlight. Doing so can help you successfully cultivate these shade-loving crops. This opens up opportunities to grow a range of plants and expand the variety of crops in the greenhouse.

Practical Tips for Greenhouse Placement

BillyOh 4000 Lincoln Wooden Clear Wall Greenhouse with Roof Vent
BillyOh 4000 Lincoln Wooden Clear Wall Greenhouse with Roof Vent

Determining the best placement for a greenhouse requires careful consideration.

1. Conduct a site assessment

Before installing a greenhouse, thoroughly evaluate your site. Consider factors like topography, drainage, soil quality, and the direction of prevailing winds. This step will help you choose a location that provides good sunlight and drainage. Also, take into account nearby structures like trees which can affect sunlight exposure.

2. Utilise shading techniques

Thinking of placing your greenhouse in full sun but want to control the amount of sunlight? Consider using shading techniques. Retractable shade cloths or light-filtering materials can be installed to provide temporary shade. These options will prevent overheating while still maximising the benefits of full sun.

3. Explore movable greenhouses

Another option to adjust sunlight exposure is to use movable or portable greenhouses. These structures can be placed in different locations throughout the growing season. That way, you can take advantage of optimal sunlight conditions.

For instance, moving the greenhouse to sunnier or shadier spots as needed. You can adapt to changes to suit the specific requirements of different plant varieties.

Remember, the best placement for a greenhouse depends on your specific goals. What’s more, the type of plants you intend to grow and your local climate.


Deciding whether a greenhouse should be in full sun or shade is a crucial consideration for successful plant cultivation. Both options offer unique benefits that can enhance growth and yield.

The full sun provides ample sunlight for photosynthesis and extended growing seasons. Meanwhile, a shaded environment can prevent excessive heat buildup and protect sensitive plants. Ultimately, the best placement depends on the specific needs of your plants, including:

  • local climate conditions
  • your ability to balance sunlight exposure

Consider the tips we outlined in this blog to create an optimal environment. Most of all, find the right balance between sun and shade for your greenhouse for the best results! Whether you have a wood greenhouse or a polycarbonate model, placement can make all the difference when it comes to growing!