Why Are My Zucchini Short And Fat (6 Reasons with Solutions)

You’re producing zucchinis. But they may have been undersized, short, and fat. You must be very stressed! But you can resolve the issues and grow them better!

So, the question arises, why are my zucchini short and fat?

Well, improper variety selection and pest disruption affect the zucchini to become short and fat. Infections like powdery mildew are quite regressive for the growth of zucchini. Besides, the low quality of soil is a primary reason for the growth deficiency of zucchini. As a result, they grow short and become fat. Moreover, lack of sunlight and water significantly disrupts the growth of zucchini.

We’ve got the causes for your zucchini issues in detail. You can go through them if you can manage a bit of your time!

So, let’s dive into it!

6 Reasons for Zucchini Being Short And Fat with Its Solutions

why are my zucchini short and fat

We’ve got the reasons for your zucchini being short and fat. There are also suggestions for preventing similar problems in the future-

1. Lack of Water

Inconsistent soil moisture levels can cause problems with zucchini growing. If plants are allowed to dry out between waterings, fruit output may suffer. Drought stress is detrimental to vegetable crops. As a result, zucchinis result in being short and fat.


Zucchinis need continuous, even soil moisture all year. You’ll need to add additional irrigation to avoid any problems. 

Water deeply once a week with at least one inch of water. Make sure to not water in a shallow manner. Because the soil must be moist 4 inches below the surface.

A mulch covering 2-3 inches deep can help to control soil moisture levels. This can also reduce the need for water.

2. Poor Soil

Zucchini does not require a nutrient-rich environment. But it thrives best in soils with a high organic matter content. 

The availability of several nutrients is influenced by the pH of the soil. As a result, it needs a pH of around 6.5. Having the pH too far off the desired point stops plants from producing good fruits. 


Make sure to use organic fertilizers that are well balanced on your zucchini patch. Every few years, test your soil to make sure it’s healthy and balanced.

Here are our favorite organic fertilizers. Have a look at them-

3. Squash Vine Borers

The squash vine borer is a dangerous pest that attacks zucchini plants. Adult vine borers are black and red day-flying insects with dark wings. 

Gardeners have a hard time seeing them as they are quick fliers. The damage that their larvae produce, on the other hand, is difficult to overlook. The zucchini get short due to their disruption.

Squash vine borer larvae munch their way through the plant’s main stem. They would hollow it out and eventually kill it. 


Below the hole at the plant’s base, you’ll find crumbly, sawdust-like excrement. Wrap the lower half of the stem with aluminum foil to keep squash vine borers away.

You can find aluminum foils from our suggestions below-

A floating row cover can also be used to protect the plants. To prevent female moths away from egg-laying sites, cover them until they bloom.

4. Powdery Mildew

One of the most prevalent fungal illnesses on zucchini is powdery mildew. This infection causes the leaves to seem as if they are coated with talcum powder. 

Severe occurrences might result in decreased photosynthesis. However, it’s mostly a cosmetic problem though.


By correctly spacing plants, you can avoid powdery mildew. Allow enough space for air to circulate and wet foliage to dry. 

Resistant types like Dunja, Anton, Astia, and Emerald Delight are good to be used. Powdery mildew is one of the most troublesome zucchini problems.

Potassium bicarbonate-based organic fungicides are useful as preventatives.

There are more preservatives around you. It’s possible that you won’t be able to pick the greatest one. As a result, we have a suggestion for you below!

These products are quite good with their quality.

5. Lack of Sunlight

It isn’t the most serious of your zucchini-growing issues. Lack of sunlight, on the other hand, can have a negative impact on plant health.

Insufficient pollination can also be a result of low light levels. Because pollinators like to forage in brighter places, especially on cooler days.


Zucchini plants need at least six to eight hours of direct sunlight each day to thrive. Lanky plants with pale green leaves and lower yields can result from lower light levels.  

When planting your zucchinis, choose a location that receives full sun. This would be an advantage for its growth.

6. Improper Selection of Varieties

Not all zucchini kinds are created equal. Some are more disease and pest-resistant than others while some are more abundant. 


If at all possible, look for disease and pest resistance. Do this when it comes to choosing zucchini cultivars for your garden. Natural resistance-rich varieties frequently outperform and produce for longer periods.

So, these are the main causes of your zucchini being short and fat. Make sure to follow our steps for the solution of the issues.

Frequently Asked Questions

Question: Is it good to use coffee grounds for zucchini?

Answer: Overall, coffee grounds are beneficial to plants and vegetables. Because they promote microorganisms’ growth in the soil and enhance tilth.

Question: Do coffee grounds kill pests like ants?

Answer: Coffee grounds do not kill ants. But they do repel a variety of ant species. Pests like ants could be a serious threat to zucchini. In that case, you may consider pouring hot coffee straight on the anthill. It will kill some of the ants who come into touch with it.

Question: Is it good for zucchini to pinch its flowers?

Answer: They should not have grown blossom buds before planting. Because this will result in weak and unproductive zucchini. You might start your seed too early. As a result, blossoming would begin before it’s time to sow in the garden. In such a case, pinch off blooms to stimulate further leaf growth. 

Final Words

The above reasons are mainly responsible. Hopefully, you got your answer for why is my zucchini short and fat! We’ve also tried giving you the solutions to those issues. 

So, good luck solving your zucchini issue!

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