How To Keep A Small Polytunnel Cool? 4 New Ways!

If you’re in the southeast area of the UK, how to keep a small polytunnel cool is your primary concern; this can be done through ventilation, shading, damping, and retaining soil moisture. These are, indeed, the stress-free ways to keep the temperature ideal for your crops when it is hot and steamy. 

Plants require a stable environment to grow and be productive. Unlike in the open field, the polytunnel one can propel towards more controlled and steady surroundings for plants to develop. 

To know how to keep a polytunnel cool, let’s first understand the temperature in the southeast UK.

in Spokane WA area how to keep a small greenhouse cool

Understanding Temperature Levels In The southeast UK

The first focus of control to maintain a healthy growing crop in a polytunnel is the temperature. Ideally, the temperature inside must be between 80 to 85 degrees Fahrenheit. 

Too much heat can cause problems for polytunnel growers in the UK. Some plants are heat-resistant such as tomatoes, peppers, and eggplants. However, some plants will not germinate if the temperature is not ideal for them. 

Carrots, lettuce, broccoli, and other heat-sensitive plants require low temperatures for a successful harvest. Therefore, it is essential to learn how to keep the heat evenly throughout the year. 

In the southeast UK area, the temperature averages between 26 to 88 degrees Fahrenheit over the year; and this is too hot for most polytunnel crops during the summer season. But there are methods to keep your polytunnel cool, thereby preserving the well-growing crops. 

Read along, and we will give you a straightforward guide in keeping the temperature of your polytunnel in control under the summer heat. 


How To Keep A Polytunnel Cool in The Southeast UK

In this article, we listed the different ways you can control the temperature of your polytunnel when it’s getting too hot, especially if you’re living in the southeast UK area. How to keep a small polytunnel cool is straightforward.

Read on and find out for yourself!


#1 Ensure proper ventilation

One of the best ways to minimise the heat in your polytunnel is by having a good airflow. One can achieve good airflow with the help of the roof vents, side vents, and door. These vents can create the necessary ventilation to cool down overheated plants. 

Continuously monitor the temperature inside your polytunnel. Plants can be damaged if the temperature rises to 81 degrees Fahrenheit. Therefore, a maximum-minimum thermometer comes in handy in this kind of situation. 

During sunny days, start up ventilation by opening all doors and vents as early as you can. You can opt to fit in automatic vent openers to lessen the effort. But sometimes, automation response is slow, so you head start the cooling process by opening the door. 

As much as possible, keep them open during warm nights as well. You can use pegging netting to prevent cats, mice, and rodents from entering, but make sure the netting allows pollinators through. 


#2 Create appropriate shading

The second method to keep the polytunnel cool is by creating shade. But this technique must be used since plants depend on good light levels to develop at their full potential.

Shading the plants by painting the polytunnel is a quick and affordable way to filter out sunlight strength. If the summer heat increases, you can add up layers. Use paints that one can wash off by water and brushing. 

Aside from paint, you can also use external or internal blinds as an alternative. The external blinds are most effective since they can filter the sunlight before it passes through. If you have extra cash, you can fit an internal blind. Install the blinds away from the vents because it could hinder adequate airflow.

You can also use mesh or shade netting to minimise the entry of light. It is a cheaper alternative to blinds and easy to install. The net can double as wildlife protection when the vents are open. 


#3 Damping down

When the weather gets scorching, another trick to use is by damping down the polytunnel. Splashing water on the hard surfaces, paths, and staging raises the humidity. The moisture level of the air increases when water evaporates, helping the plants cope with the heat and making it less favourable for pests to thrive. 

Please do this as often as possible because it is crucial when it’s steaming hot. If it is unlikely to damp the polytunnel all day, aim for at least twice a day. Wet the surfaces once in the morning and the evening. 


#4 Prevent water stress

Dry soil is terrible for any plant. Keeping enough moisture at the root level produces healthier crops than those without. Plants are capable of protecting themselves from drying through transpiration. Hindering this ability can result in overheating and wilting. Therefore, sustaining it with water is significant.

Always look for the telltale signs of heat stress among plants. If it shows wilting, scorched leaves, and dry young foliage, then it’s time to moisturise the soil. Watering the plants can prevent these signs from showing. 

However, you cannot standby and look out for drying soil all day. There are various ways to keep the moisture of the soil at a suitable level. You can set up a self-watering plant or opt for a more sustainable approach using hydroponics.

Hydroponics involves a more expensive start-up but comes with great value.



Do not let the scorching heat stop you from being a productive polytunnel grower. If you maximise the techniques presented in this article, you are guaranteed a bountiful harvest every season. So if you’re in the southeast UK area, how to keep a small polytunnel cool should not be hard for you. 

what is the size of a baby crib mattress

What Is The Size Of A Baby Crib Mattress? Read This!

A baby is tiny, but then they also need to have a comfortable sleep since they are one sleepyhead, so, do you have any idea what is the size of a baby crib mattress?

Babies are sensitive; that’s why you should always keep an eye on them.

When it comes to mattresses, you want to find the material suitable for their skin providing comfort and support.

There are beddings with pillows sold as a package for babies.

In that way, you will be able to make sure that they have a good surface and support them when they are sleeping.

Having a soft mattress to lay them in makes their sleep a lot better.

It must be smooth and fluffy so that it would make the baby feel comfortable and sleepier.

Aside from drinking milk, another thing that babies do is cry and sleep.

As a mother, you would not want them to cry all the time.

It would mean too much stress both for the baby and for you.

So, without further ado, let’s discuss!


The Size Of A Baby Crib Mattress

A baby sometimes cries because of hunger, but it could also be uncomfortable and a strange feeling for them.

As I have said, babies are way sensitive. You must be very careful about choosing your things to avoid sudden reactions.

Putting the baby beside you on your mattress is fine, although it would be better to have their bed made for babies.

Mattresses should be soft and mild for the baby so choose wisely.

Include the thickness and, of course, the size of the bed.

But then what size is a standard baby crib mattress? There are a lot of beds found in every part of the world. It mesmerizes me to know about all this.

There are so many types of mattresses produced. It could be traditional, modern, convertible, etc. It is all up to you to choose from your preference.

So, what is the size of a baby crib mattress?

A crib mattress would usually be fifty–one and five – eights (51 5/8) up to 53 inches in length.

Including the width is about twenty-seven and one–fourth (27 ¼ ) up to 28 inches. And its thickness would be around 4 – 6 inches thick.

Familiarizing yourself with this is the right decision, especially when you are having a baby in no time.

A crib is one tool that could help you have some time for other things when your baby is asleep. You can just put them down there and let them rest for a while.

As a mom of an infant, you have no enough time for other things, and you focus on your baby. Babies are very dependent.

And that would mean having them by your side always.

You see, some babies, when uncomfortable with their sleep-wake up in no time.

You have to find the right mattress for them to put into so that their sleep won’t get disturbed, and you can also rest and sleep for a while.

Grab that crib and find the right mattress for it.


Is It Necessary To Buy A Mattress That Fits The Crib?

Well, indeed it is. Of course, it is necessary to buy a mattress that fits into your cribs.

Leaving spaces or gaps free could put your baby in danger.

Remember that your cribs could be their sleeping place up until they are 3 – 4 years old.

And that you have to consider things up to that period.

When a baby starts to crawl, walk or explore they would move more inside the crib.

And you should limit contact with the material as much as possible.

Some cribs have gaps in their structure that could trap up your babies. You have to avoid these situations from happening as much as possible.

And when talking about a mattress that is way bigger than your crib, it would still not go well.

You have to think of how it would like if it laid flat on the surface.

It would just fold upwards, which would affect the mattress’s structure and form.

It would be going up along the sides of the crib and would create a sweltering space.

Mattresses are thick, which could cause to give off some heat from it.

But then it is better that way than a bed blocking the sides.

It could result in a lack of air and could harm the baby. Just try to cut the mattress to the size of the crib’s surface as much as possible.

In an instance, to avoid this, you could learn how to measure your mattress to fit with the crib.

You can check this out, and you are good to go.



When you are carrying a baby inside you, you would want to give him/ her the best things you could when they come out. That includes a good sleeping bed or crib.

Now that we have answered your question, “What is the size of a baby crib mattress?”

I hope that you have an idea somehow and you can prepare for it.

Best wishes and have a good time with your babies!

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