What Size Grow Bag For Tomatoes Is Ideal?

What size grow bag for tomatoes is appropriate to be used? You may have limited garden space and you are considering using grow bag for your tomato plant. Using grow bags to cultivate tomatoes is a great way of utilizing the little space you have to grow tomatoes.

It is not a new thing to grow tomatoes in grow bags or even containers or pots. Tomato is an excellent plant that can be easily grown in grow bags.

So, if you are short of space or you don’t have a garden or lawn you shouldn’t worry because you can take advantage of grow bag to grow your tomato plant.

But what is the ideal grow bag to use for tomato plants? This is the question we will be answering in this post, so if you’re curious to know about this then continue reading for some insight on this.

What Size Grow Bag For Tomatoes?

The ideal grow bag size to use for your tomato plant should be between 8 inches (15 to 17 cm) up to 14 inches (30 cm or bigger). But generally, a minimum of 10 to 15 inches diameter grow bag is appropriate for growing tomato plants. Then the grow bag can be at least 8 to 12 (20 to 30 cm) inches deep.

Or we can say a 10 gallon grow bag is ideal for determinate tomatoes. Then for indeterminate tomatoes, 20 gallons of grow bag should be used. Between 5 to 7 gallons of grow bag is ideal for tomato varieties that are smaller such as cherry tomatoes or compact patio tomato varieties.

Can Small Grow Bags Be Used For Tomatoes?

Even though it’s possible to grow tomatoes in smaller grow bags, we will, however, advise you against doing so. This is because the tomato plant can become overcrowded and this can affect the development of roots as well as nutrient and water absorption.

Using small grow bags for tomatoes can give rise to stunted growth coupled with poor yield.

Read more about Problems With Self Watering Pots – Top 5 Common Problems

What Are The Factors That Determines The Grow Size Bag For Tomatoes?

The size of grow bags usually ranges from 5 gallons and reach up to 1000 gallons. From the explanation above about using small grow bags for tomatoes, it is only logical to try and avoid using small grow bags for tomatoes.

But do you know how you can determine if a grow bag is too small for the type of tomato variety you’re growing? Well, you can use the factor below to consider how you can go about choosing the ideal grow bag size for growing tomatoes.

·         The Variety Of Tomato – What Size Grow Bag For Tomatoes

Ideally, tomato varieties such as cherry tomatoes require smaller grow bags. Then bigger tomatoes variety such as beefsteak tomato will require larger grow bags.

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·         Indoor Or Outdoor Cultivation

The plant care as well as their watering needs will vary when it comes to deciding if you will be growing them indoors or outdoors. Hence, the grow bag size will vary with regard to indoor or outdoor cultivation.

·         Temperature

Tomato is a warm loving crop so you need to meet the temperature requirements for this plant. However, too hot a climate or a scorching sun can burn the tomato plant and cause tomato splitting. But tomatoes can be grown all year round within a greenhouse. A bigger grow bag is ideal for your tomato if the temperature in your always hot or too cold.

·         Watering Needs – What Size Grow Bag For Tomatoes

The tomato plant requires adequate water. However, the plant should not be too soggy. If you’re using a small grow bag for your tomatoes, it usually requires you to water more. For instance, grow bags that are smaller than 8 inches may require you to water twice or even more every day.

So, try to choose the ideal grow bag that is suitable for your tomato variety if you don’t want to go through the stress of watering at regular intervals.

·         Portability Of Grow Bag

How frequently you will need to move your grow bag is also an important point to consider when choosing the ideal size of grow bag.

Portability Of Grow Bag For Tomato

·         Location

You should also consider the location of your area to determine the size of grow bag to be used for your tomato plant.

Consider things such as different seasons such as hot temperatures during summer to prevent the root of your tomato plant from baking the roots. Then also consider the susceptibility of root rot during the rainy season in your region.

What Size Grow Bag For Tomatoes Of Determinate And Indeterminate?

  • Determinate Tomatoes

Determinate tomatoes are smaller varieties that can grow up to 5 feet tall and they can thrive in a small grow bag.

So, for determinate tomatoes, it is usually recommended to use a 20 gallon or bigger grow bag. Then the grow bag should be at least 10 inches in diameter and have a dept of at least 8 inches.

  • Indeterminate Tomatoes

Most indeterminate tomato varieties can fit 20-gallon size grow bags or larger. Then the grow bag for indeterminate tomato variety should be at least 15 inches in diameter and 12 inches deep.

In all these tips for choosing the best grow bag for tomatoes, just have in mind that the bigger the grow bag, the better for your tomato plant no matter the variety been planted.

What Size Grow Bag For Tomatoes Of Determinate And Indeterminate

What Size Grow Bag For Tomatoes? Final Say

Tomatoes can be grown easily in grow bags as well as pots or containers. Just choose the right size for the tomato variety you will be planting.

The ideal grow bag size for tomatoes has been discussed in this post. But you should generally know that the bigger the grow bag size, the better it is irrespective of the tomato variety.


What is the best size grow bag for tomatoes?

The best size grow bag for tomatoes usually depend on some factors. The major factor that you should first look at is how big or small the tomato variety is.

What size grow bag is needed for tomatoes?

The grow bag size required for tomatoes should be as large as you can find. For instance, a 10 gallon grow bag size is fine for a single tomato plant.

What size fabric grow bag for tomatoes?

The fabrics used by grow bags are usually made of non-woven pressed fabrics and they come with small holes for air circulation and drainage. You can use a 5 or 10 gallon fabric grow bag for a determinate patio tomato variety. Then bigger fabrics grow bags can be used for bigger tomato varieties.

What size grow bag for indeterminate tomatoes?

The ideal size of grow bag to be used for indeterminate tomatoes variety is at least 20 gallons or larger. Also, make sure the grow bag is at least 15 inches in diameter and at least 12 inches deep.

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