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You are here: Home / Gardening / How To Prune Tomato Plants

How To Prune Tomato Plants

in Gardening on 06/02/20

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Everyone loves growing tomatoes.  But did you know pruning them correctly is an important part?  Click through NOW to learn how to prune tomatoes the right way...

Pruning tomato plants can be a polarizing topic for gardeners. Some think that it’s completely unnecessary to prune tomatoes since they can grow and thrive with no pruning.

Meanwhile, some gardeners believe that pruned plants result in hardier tomato plants that bear larger and more plump fruit.

Plus keeping an indeterminate tomato plant pruned means the leaves dry quicker preventing diseases leading to overall better plant health.

So which one is right? Today, we will find out as we talk about whether or not you need to prune the tomatoes in your garden and how to do it properly. Let’s get started!

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7 Tomato Plant Problems And Solutions!

Do Tomato Plants Need To Be Pruned?

Let’s get one thing out of the way first, both schools of thought about pruning tomatoes will work just fine but it all depends on the varieties of tomato plants you are growing in your garden. 

Not all tomato plants need pruning particularly determinate tomatoes. This variety of tomato develops all of its fruit one time so they don’t need as much help.

They grow to a certain height only once they mature. Once its first fruits have grown and ripened, they likely won’t grow any new ones. This includes:

  • Ace 55
  • Amelia
  • Better Bush
  • Biltmore
  • Heatmaster
  • Heinz Classic
  • Mountain Pride
  • and Patio variety tomatoes

Meanwhile, indeterminate tomatoes tend to spread far and wide from its base plant. This means that it is using most of its energy in growing stems, branches, and leaves instead of flowering and eventually bearing large fruits.

Indeterminate tomato plants can grow as tall as 12+ feet, however most are around 6 feet at their tallest and will continue setting fruit until frost kills them off (or you pull them up..).

Indeterminate tomatoes need to be staked to stay upright or they will fall over and crawl along the ground.

It’s not recommended that you let them grow on the ground as it makes it harder to harvest, encourages rotting fruit, fungus diseases due to poor air flow, and not staking them upright can lead to sunburn as they aren’t protected by the shade from the foliage.

Some common examples of indeterminate tomatoes include:

  • Big Boy
  • Beef Master
  • Black Prince
  • German Queen
  • most cherry tomato varieties
  • and most heirloom varieties.
Everyone loves growing tomatoes.  But did you know pruning them correctly is an important part?  Click through NOW to learn how to prune tomatoes the right way...
Planting tomatoes is ideal for beginners.

When pruning tomatoes, it’s important to keep in mind why you’re doing it in the first place.

First, you want to improve airflow and lessen the likelihood of diseases wreaking havoc on your plants.

Second, you want your plants to yield bigger and plumper fruits.

Third and finally, you want to encourage faster ripening to beat the fall frost.

When properly pruned, indeterminate tomatoes will have foliage that receives adequate sunlight and is able to make and use food more efficiently. This results in boosted growth and fruit production.

Pruning Tomatoes the Right Way

Remove Suckers

Everyone loves growing tomatoes.  But did you know pruning them correctly is an important part?  Click through NOW to learn how to prune tomatoes the right way...
Once you see suckers, remove them right away.

The answer to “When should I trim my tomato plants?”, is when you start to see suckers.

Suckers are new and tiny branches that sprout where a branch meets the stem of an indeterminate tomato. When left to grow, these can take energy from the rest of the plant which can result in fewer and smaller fruits. 

Also if a tomato plant doesn’t have enough airflow it can lead to diseases, so when you snip sucker branches this will help keep your plant healthy.

What you’re looking for is the small new growth that is BETWEEN where the branch and the stem come together. That is what we call a sucker and is how you prune a tomato plant :).

You can remove these with your hand or pruning shears.

Everyone loves growing tomatoes.  But did you know pruning them correctly is an important part?  Click through NOW to learn how to prune tomatoes the right way...
Suckers can be found in between branches.

Remove Bottom Yellowing Leaves

Yellow leaves tend to use more sugar than it can produce for the plant, so it’s best to snip them off. Apart from helping your tomato plants divert energy and food toward better causes such as growing strong roots and allowing it to produce more fruit, removing the bottom and yellowing leaves helps keep your plants fresh and safe from diseases.

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Why And How To Save Seeds From Your Garden

Pinch Off Unnecessary Fruit-Bearing Clusters in Indeterminate Varieties

Choose four to five fruit-bearing trusses and pinch off the rest but leave the plant’s terminal shoot intact. This will result in large and healthy fruit in indeterminate varieties.

Practice Topping

When you’re nearing the first frost, it’s important to help your tomato plant direct its energy toward the maturation of existing fruits.

About 30 days before the frost, remove all the growing tips from your plants so that it can focus its energy on the optimal growth of fruits.

Harvest Them

You can pick your tomatoes as soon as you see a hint of color change from green toward red. Tomatoes continue to ripen after they are picked, so by using the method of harvesting them before they are fully red, you can allow your plants to put more energy into setting more fruit and maturing what’s left.

Everyone loves growing tomatoes.  But did you know pruning them correctly is an important part?  Click through NOW to learn how to prune tomatoes the right way...
When the tomatoes start to ripen, harvest them immediately to avoid them breaking the branches.

By harvesting them at this stage you can also take the strain of the weight of tomatoes off the plant and that will allow the plant to not break branches trying to support heavy fruit.

Tomatoes are some of the easiest plants to grow. Most people choose them as a beginner plant to learn to garden or to teach kids. Once they begin fruiting, especially cherry tomato varieties, they almost can’t be stopped or slowed down.

Using the methods of keeping your tomato plants pruned and in good health will ensure a bountiful harvest.

What is your favorite variety of tomatoes to grow? I love cherry tomatoes, they grow so fast I harvest almost daily all summer.

Leave your comments below and any pictures of your garden, I love to see what you’re up to!

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Everyone loves growing tomatoes.  But did you know pruning them correctly is an important part?  Click through NOW to learn how to prune tomatoes the right way...
Everyone loves growing tomatoes.  But did you know pruning them correctly is an important part?  Click through NOW to learn how to prune tomatoes the right way...

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Hi! I'm Dian, a wife of 20+ years, Mom to 4 grown kids, and "Nana" to 5. I LOVE reality shows & vegetable gardening & talking about both. I am currently pursuing my Master Gardener Certification.... Read more about Dian & Learning To Grow Your Own Food.

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