Summer brings many challenges to your gardening. You may be faced with many problems and they can seem tricky. Greenhouse gardeners will be worried about their greenhouses becoming too hot when the hot weather hits. It makes sense to create a comfortable and balanced greenhouse environment for your plants.

To get your garden greenhouse through the summer, learn about the concerns and how to solve or improve them.

Can a greenhouse get too much sun?

Greenhouse gardeners know how important sunlight is to greenhouse plants. It is often said that plants need enough sunlight for photosynthesis. This concept is true, but in practice, you need to adapt it to the situation.

When you think about whether there is too much sunlight for your greenhouse, you should focus more on your plants. Leafy plants such as lettuce, kale, and spinach are shade tolerant plants. That means they don't need particularly high levels of sunlight. Leafy vegetables grow better in less sunlight. Intense sunlight can affect the taste of these types of vegetables.

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Some plants are suitable for moderate sunlight, such as carrots and potatoes. They only need 3-4 hours of continuous sunlight during the day.

Vining plants need the most sunlight and they need strong sunlight to grow better. If you want to grow greenhouse tomatoes and greenhouse peppers, you have to provide them with adequate light and heat conditions.

Overall, you need to judge whether your greenhouse needs a lot of sunlight depending on the crops you cultivate. Of course, in summer, you should also pay attention to greenhouse ventilation and indoor temperature regulation.

Can plants overheat in a greenhouse?

55°-75° F (13°-24° C) is a comfortable temperature for most greenhouses and greenhouse plants. Within this temperature range, greenhouse plants will grow optimally. Above this temperature, plants will be at risk.

In the summer, a greenhouse will exceed 75°F, which is a warning for your greenhouse. If this temperature is exceeded, your plants will suffer serious or even fatal damage. Even drought-tolerant plants will not be able to withstand the gradual increase in temperature.

When temperatures exceed 85°-90°F (29°-32°C), the leaves of greenhouse plants will wilt and turn brown around the edges. When in this condition, you need to set up cooling equipment in the greenhouse.

Should I leave my greenhouse door open?

The answer to this question is yes. Because your greenhouse needs to be ventilated in order for the plants to look their best.

One of the most important aspects of greenhouse gardening is ventilation, which is one of the most important challenges for all greenhouse gardeners. Ventilation gives you the flexibility to control the temperature inside your greenhouse. The ventilation elements in a greenhouse are doors, exhaust fans, and vents.

During the summer months, greenhouses can easily become very hot. High temperatures can be devastating to plants. When you are concerned about high temperatures, you should open the greenhouse doors in addition to opening the exhaust vents and exhaust fans.

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Quictent large greenhouses have two doors. Also, there are many vents on the side walls.

Quictent mini greenhouse and small greenhouse also have roll-up zipper doors for easy ventilation. 

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How to keep the greenhouse in summer cool?

This is a major concern for all gardeners in the summer. Even if the greenhouse has vents, more cooling measures are still necessary. In summer, you need to pay more attention to your plants and cool down your greenhouse.

Set up exhaust fans.

Greenhouse gardeners are no strangers to exhaust fans. They often combine exhaust fans with vents to enhance cross-ventilation. In the summer, you need to pay more attention to indoor air circulation. Owners of medium-sized greenhouses and large, heavy-duty greenhouses may need to set up multiple exhaust fans in their greenhouses to ensure that every plant is taken care of.

Use greenhouse fans.

As the temperature gradually rises, you need to do more cooling measures. For example, set up greenhouse fans in the greenhouse when the temperature exceeds 90 degrees Fahrenheit.

Location. Location is a key factor in setting up your greenhouse fan system. If you set the fan in the wrong location, the greenhouse fan will be much less useful. You should install the greenhouse fan on top of the greenhouse. The airflow will escape upward, not downward. This way, the cooling effect will be optimal.

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Size. The size of your greenhouse fan depends a lot on the size of your greenhouse. You can't set up a greenhouse fan system for a mini greenhouse in an 8x10 greenhouse or a 10x20 greenhouse. If you are not sure what fan system is right for your greenhouse, it is recommended to seek help from a professional.

Install a thermometer.

An experienced gardener can determine the temperature condition of the greenhouse within a short time of entering the greenhouse. However, for most gardeners, it is best to install a thermometer in the greenhouse. This way you can be constantly aware of the changes in temperature in the greenhouse.

Boost your greenhouse cooling with an evaporation system

If you have a limited budget but you want to get a good cooling effect, an evaporation system is an ideal choice for you. These systems are cheap and effective. They use heat to evaporate water and can cool your greenhouse by 10 to 20 degrees. They work better when the relative humidity is low.


Choose the right evaporation system based on the size of your greenhouse. One square foot of pad can be used to cool 20 square feet of floor area. To make your evaporation systems last longer and keep them in good condition, clean them regularly.


Many ways to boost your greenhouse summer cooling program. To get the best out of your cooling facility, develop an optimal plan for your greenhouse. If you still have a lot of confusion, seek help from an expert in time.

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