What happens if you grow tomatoes too close together?

Author: Katelin Stracke IV  |  Last update: Thursday, November 27, 2025

Tomato plants require a good amount of these resources, so if they're planted closely together, they will compete and likely all lose. Low Production – Even if tomato plants growing closely together survive, they may not produce as many tomatoes as they could have if properly spaced.

Can you plant tomatoes too close together?

Tomatoes need plenty of air circulation to prevent diseases from spreading. If the healthy plants are too close together, the leaves will touch each other and disease can easily spread from one plant to another.

Are my tomato plants too crowded?

Too Crowded

2 Unless the pot is tremendous in size (like the size of a raised bed), plant only one tomato plant per pot. While multiple tomato plants can survive in a crowded pot, they won't get very big and will not provide as many tomatoes for you to harvest.

What is the effect of spacing on tomato?

The 20 cm interrow spacing showed a marked increase in marketable fruit yield by 35.96% as compared to 30 cm spacing used by farmers. Planting tomato in closer interrow spacing (60 cm) resulted in 50% yield increment than the widest (120 cm) space between rows.

What happens if you plant plants too close together?

Keep in mind that there's a whole world of difference between planting too close and planting in the same hole. Planting too close will eventually cause the decline of all of the plants. Planting in the same hole will not as the roots will combine and merge the plants into one.

how close can you plant TOMATO plants | what a tomato plant needs for closer planting

What happens if plants are overcrowded?

Crowded seedlings are a common problem that can prevent plants from reaching their full potential. If you don't plant your seeds far enough apart, they'll have to compete for the same sun, water, air and nutrients in the soil.

Why would it be a disadvantage of plants grow too close together?

Planting trees too close together or in areas with limited space can lead to overcrowding, which negatively impacts their growth and health. Root Competition: Trees compete for nutrients, water, and sunlight, leading to stunted growth.

What is the best spacing for tomatoes?

In Ground: If you're planting directly in the ground, you may have more space and be planting in rows. In that case, space your tomatoes 18-24 inches apart along a row, but space your rows about 36 inches apart. This will leave enough room for you to work between rows.

Why is it important to stack tomatoes?

Staking can yield the best tomatoes and offers several important benefits: 1. Larger fruit: With more space to grow, tomato plants can produce more fruit. Staking spreads out the vine, offering more sunlight to different plant parts to encourage more and larger fruits.

Do tomato plants need to be separated?

Determinate-type tomatoes need plenty of space between plants to accommodate their bushy growth. Unsupported determinate tomatoes can be planted 2 to 2 1/2 feet apart in rows spaced 4 feet apart. Indeterminate tomatoes grow, flower, and set fruit continuously throughout the growing season.

Should you thin out bushy tomato plants?

Pruning tomato plants is an optional technique that some gardeners use to keep plants tidy, manipulate fruit size, and even speed ripening. There is one big catch: You should only prune indeterminate varieties, which produce new leaves and flowers continuously through the growing season.

How often should I water tomatoes?

Water correctly: Do not overwater. The first week tomato plants are in the ground, they need water every day, but back off watering after the first week, slowly weaning the plants down to 1 to 1.5 inches of water per week.

Can tomato plants touch each other?

In general, tomato plants need at least 18 inches of space in each direction. If planting multiple containers of tomatoes, be sure to leave enough space between them so that the plants have room to grow.

What not to do when planting tomatoes?

9 Common Tomato Growing Mistakes That Can Ruin Your Harvest
  1. Mistake 1: Planting tomatoes too early or too late.
  2. Mistake 2: Starting with poor seedlings.
  3. Mistake 3: Shallow planting.
  4. Mistake 4: Inconsistent watering.
  5. Mistake 5: Overhead watering.
  6. Mistake 6: Not staking tomatoes.

How close can you plant tomatoes in cages?

Set cages 4 feet apart, depending on the size of your tomato variety. Cages are easy to take up at the end of the season.

What should not be planted near tomatoes?

11 Worst Plants to Plant with Tomatoes
  • Corn. While corn and tomatoes might seem like a great summer pairing, they're not the best companions in the garden. ...
  • Eggplant. Eggplants and tomatoes belong to the same plant family, Solanaceae, which makes them prone to similar issues. ...
  • Broccoli. ...
  • Potatoes. ...
  • Cucumbers. ...
  • Peas. ...
  • Fennel. ...
  • Dill.

Is it better to stake or cage tomatoes?

A better choice is to stake your tomatoes. There are stakes available as long as 10 feet. They come in different materials like wood, bamboo, plastic and metal.

Why did people start throwing tomatoes?

One popular theory is that disgruntled townspeople attacked city councilmen with tomatoes during a town celebration. Whatever happened to begin the tradition, it was enjoyed so much that it was repeated the next year, and the year after that, and so on.

Can you plant tomatoes 12 inches apart?

They recommend spacing tomato plants two feet or more apart. Air circulation is particularly important considering that disease spread quickly in humid situations, according to researchers from the UC Davis Vegetable Research and Information Center.

Do tomatoes grow better in pots or the ground?

In general, determinate tomatoes tend to do better in pots, so look for those. It's also possible to grow indeterminate tomatoes in containers, of course, as long as you provide enough support and soil volume.

Should tomatoes be mounded?

Selecting Growing Area

Tomato plants require abundant moisture for best growth, so arrange for easy watering. The area selected should be well drained since poor drainage promotes root loss. Tomatoes grown on heavy or poorly drained soils should be planted in raised beds or mounds four to six inches high.

What happens if you grow plants too close?

If you plant flowers too close together, the plants get stressed and are prone to diseases, Kole says. If air can't properly circulate and the plants can't dry out between waterings, fungus sets in. Roots can rot. And once plants are weakened from stress, insects move in.

Do onions and tomatoes grow well together?

Onions. Like garlic, onions are also known as natural pest repellents due to their strong odor. They are great companion plants for tomatoes. But, if you're struggling with thrips in your garden, avoid planting onions, leeks, or garlic near your tomatoes.

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