What Size Pot For Growing Spinach In A Polytunnel? 4 Special Tips!

If you’re unsure what size pot for growing spinach in a polytunnel is ideal, opt for a shallow and medium container. Spinach is an excellent green vegetable to grow in the polytunnel, and it’s also suitable for pots if you’re limited in indoor space in the UK. Because it doesn’t require an enormous container, you virtually have no excuse to skip the chance of harvesting fresh and healthy spinach in your British backyard.

There’s no doubt that spinach is one of the healthiest foods, so why not cultivate this tasty green yourself? Thepolytunnelwill provides and maintains the optimal growing requirements for spinach. And since you’re growing them in pots, maintenance will even be much more comfortable. 

What Size Pot For Growing Spinach In A Greenhouse

What Size Pot For Growing Spinach In A Polytunnel And Spacing Requirements

Spinach will thrive best in a shallow and medium container. To give you a general idea of the measurement, a pot 14 inches wide and 8 inches deep should be good for your spinach. These measurements will provide the ideal space for your seeds to grow

A container measuring 7.5 litres can hold three spinach plants, while a 38-litre container is suitable for ten plants. The number range means that if your pot is 14 inches in diameter, you can put up to 4 spinach plants. However, remember that if you’re growing many plants in a container or pot, you’ll eventually have to thin them 5 inches apart. 

Compared to other plants, it’s worth emphasising the importance of the pot’s depth for spinach. The depth is essential because it has an extensive root system, and using a limiting container will cause problems in growth and overcrowding. Overall, remember to choose a pot 6 to 8 inches deep and plan to grow many plants in a pot. 


Space requirements of spinach

After learning about the pot size for growing spinach in the polytunnel, you must also know its space requirements. You want to sow your seeds half an inch deep before covering them with soil lightly, for starters. To ensure that they won’t dry up, add half an inch of mulch after sowing. 

The spacing of the seeds itself is also crucial for their growth because of their extensive root system. An inch of space between each seed should be enough. Once the plants grow at around 2 inches, you can trim them to keep them 4 inches apart

If you’re growing transplants, this space should be at around 8 inches. Ensuring proper spacing in the polytunnel will also make harvest easier. Each plant should have 3 inches of space, but this could rise to 5 inches if you harvest large leaves. 

On the other hand, a 2-inch space should be enough if you’re going to harvest early. Remember that wherever you’re growing spinach, consider its large leaves and root system. Still, spinach is one of those crops that will not require a vast area to develop, making them ideal for pot planting in the polytunnel


Caring For Spinach In Pots In The Polytunnel


Planting spinach

The best materials for growing spinach are non-porous, including glazed ceramic, concrete, or wood. Be diligent and practice cleanliness and sanitation to prevent contamination of the pots as well. As for the soil, the pH should be 6.0 to 7.0.

You can also create your potting soil using grit, vermiculite, and compost. Add some soy meal into the pot’s centre before putting the potting mix at the top. You can also include other ingredients that will provide nutrients for your spinach plants. 

To encourage germination, ensure the temperatures between 35 to 75°F, and you can directly sow either in spring or autumn. It can take 22 days to germinate but expect that spinach is relatively slow to establish. 

Spinach companion planting 

Thepolytunnelalso makes an excellent place to do companion planting with spinach. By doing so, you can deter pests and attract beneficial insects. The plants suitable for spinach companion planting include parsley and annuals like petunias and marigolds. 

However, be aware of their spacing requirements so you can keep a neat-looking polytunnel


Feeding and watering

Spinach is a heavy feeder and requires consistent moisture. For feeding, choose a fertiliser that is high in nitrogen. You can feed the plants before planting, after thinning, and by side-dressing if they grow slowly. 

And like other plants, ensure that you water frequently, but be careful not to overwater the plants. 



Spinach won’t grow successfully if it is competing with weeds. To address this problem, manual removal and mulching are a must. And to ensure proper spacing, remember to thin consistently. 



Growing in pots in the polytunnel is an excellent way to harvest fresh and healthy spinach, even as a newbie UK gardener with limited space and time. But what size pot for growing spinach in a polytunnel is ideal? Use a shallow to medium pot measuring 14 inches wide and 8 inches deep. 

These measurements ensure that each plant will get enough space considering that spinach has an extensive root system. Spinach should also have 3 inches of space, but be sure to adjust accordingly, depending on when you want to harvest. Thinning once the plants grow will also maintain the space requirements for a good yield of this healthy green. 


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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