Skip to Content

5 Reasons Why Tomatoes Are Not Flowering

5 Reasons Why Tomatoes Are Not Flowering

On occasion, tomato plants will produce plenty of flowers yet lack the number of tomatoes that pop out.

In other situations, tomato plants may not make any flowers at all, leaving you wondering where things have gone wrong.

Gardeners spend quite a bit of time tending to their tomato plants, so it’s common for frustration to set in when it comes to tomatoes not flowering.

I know that I’ve been in the position of looking very forward to devouring juicy tomatoes, only to be left with no fruit or flowers come blooming time.


Why Tomatoes Are Not Flowering?

The main reason behind tomatoes not flowering typically lies in the quality of the soil. I recommend adding fertilizer to your plant, either potted or in the ground, that does not contain nitrogen. If you still don’t have any flowers, disease, genetics, temperature, and nutrition may also be the culprits!


The Reasons Behind Lackluster Tomato Plants

A lackluster garden is disheartening, to say the least.

Those who spend a great deal of time caring for our plants can understand how irritating it is to have tomato plants that won’t flower.

However, it’s crucial to remember that this flowering problem is usually very fixable.


1. Disease

Though tomato plants are very hardy and possess the ability to grow and flourish without an overabundance of care, disease among your tomato plants is always possible.

Bacterial spots are the major player in killing tomato plants, and because of them, your plant will not flower.

If you notice your plant wilting and the leaves covered in spots, it’s time to destroy the plant to prevent the bacteria from spreading to those around it.


2. Poor Soil Nutrition

Lack of nutrition might be the reason your tomato plants won’t flower.

Essential nutrients in the soil may be depleted, or perhaps your soil is too rich in nitrogen to encourage flowering.

Many commercial fertilizers contain nitrogen, and gardeners must ensure they aren’t adding too much.

Choose a well-balanced fertilizer for your tomato plants, preferably a phosphate-based brand.

You can tell if your tomato plants have too much nitrogen when you’ve got healthy foliage but zero flowers.


3. Plant Genetics

Sometimes the genetics of your tomato plant may affect the way it flowers and the number of tomatoes produced. In some cases, the plant is sterile.

A sterile plant will often come from store-bought seeds or seeds from a tomato you’ve sliced at home.

If you’ve purchased from a reputable nursery, sterilization is not likely a problem.


4. Poor Pollination

Tomatoes are unique in the fact that they can pollinate themselves. However, they’re not very good at it.

Tomatoes need wind, bees, and airflow to produce fruit and flowers successfully.

If your garden or living space lacks these three components, or if you’re growing your tomato plant in a pot indoors, then you will need to hand pollinate the plant.


5. Temperature Issues

A rapid temperature change is not suitable for your tomato plants, and if it doesn’t kill them, it will keep them from flowering.

Warm, sunny, and well-ventilated conditions are necessary for healthy tomato plants.

When the weather in your area is fluctuating, such as cold temperatures and night and hot during the day, you’ll want to bring your tomato plants inside for the night.

Of course, you can always resist putting them out right after the final frost. Give Mother Nature some time to level out.


Encouraging Tomato Plants to Flower

If you’ve been frustrated with the performance of your tomato plants, you are not alone. Luckily, you can do a few things to encourage them to flower and eventually produce fruit.

Planting indeterminate tomato plants, for example, will encourage growth and the production of fruit on the plant throughout the season.

Good air circulation helps plants to flower as well.

If your tomato plants don’t have air circulation, they won’t be able to self-pollinate. They’ll also need the assistance of local insects and bees.

Tomato plants that are too close together might have to be spaced evenly.

Adding phosphorus to the soil and ensuring that your plants have the perfect environment to thrive will provide you with flowering tomato plants year after year.

Sometimes, they need a little encouragement!


Frequently Asked Questions About Tomatoes Not Flowering


Why won’t my tomatoes flower?

There are many reasons that your tomato plants might not flower, most of them fixable. Disease, lack of proper nutrition in the soil, extreme temperature fluctuation, disease, pollination, and genetics play a role in tomatoes not flowering.


If my tomato plants flower, will they produce fruit?

It’s possible, but there’s no guarantee that a flowering tomato plant will produce fruit. Late pollination may keep a tomato plant from growing actual tomatoes, or they might not have time to ripen.


Do I have to get rid of diseased tomato plants?

You should rid your garden of bacteria-infested tomato plants. They can transmit disease to surrounding plants, so it’s crucial to ensure that diseased plants are removed.


Guaranteeing Flowering Tomato Plants

There is no way to guarantee that your tomato plants will flower, but you can take the necessary steps to make sure you’re doing what you can to help them along.

By establishing a routine early in their care, you’ll get to know them well, and you’ll be able to tell what adjustments you need to make to their living conditions to help them thrive.

How To Use Tomato Cages The Right Way!
How To Grow Long Stem Roses? Best Tips!