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The Surprising Benefits of Growing Potatoes Near Tomatoes


growing potatoes near tomatoes
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Growing vegetables is a great way to provide fresh produce for your family while also getting some exercise and sunshine. But did you know that certain plants can benefit from being grown together? One such combination is potatoes and tomatoes. While these two plants may seem like an odd pairing, there are actually many benefits to growing them together. In this article, we'll explore why you should consider planting potatoes near tomatoes.

Growing Potatoes Near Tomatoes: The Benefits

1. Pest Control

One of the biggest benefits of growing potatoes near tomatoes is pest control. Potato beetles and tomato hornworms are two common pests that can devastate crops. However, when potatoes and tomatoes are grown together, they help repel each other's pests. This is because potato plants contain compounds called solanine and chaconine, which deter potato beetles. Meanwhile, tomato plants contain alkaloids that deter tomato hornworms. By planting these two crops together, you can reduce the risk of infestations and protect both crops.

How to Plant

To take advantage of this benefit, plant the potatoes and tomatoes in the same bed, with the potatoes planted slightly deeper than the tomatoes. You can also use companion planting techniques by alternating rows of potatoes and tomatoes. Be sure to rotate your crops each year to prevent the buildup of soil-borne diseases.

2. Soil Improvement

Another benefit of growing potatoes near tomatoes is soil improvement. Both crops have different nutrient requirements, which means they utilize different nutrients in the soil. This helps prevent soil depletion and encourages healthy plant growth. Additionally, potatoes have deep roots that penetrate the soil, improving its structure and aeration. This benefits the tomatoes by allowing better water and nutrient uptake.

How to Plant

To improve your soil, plant the potatoes and tomatoes together in the same bed, using companion planting techniques to alternate rows. Be sure to add plenty of organic matter to the soil before planting, and consider adding a cover crop during the off-season to further improve soil health.

3. Increased Yield

Planting potatoes near tomatoes can also increase your yield. This is because the potatoes help shade the soil around the tomatoes, reducing evaporation and keeping the soil cooler. This creates a more favorable environment for tomato growth, resulting in larger yields.

How to Plant

To take advantage of this benefit, plant the potatoes and tomatoes in the same bed, with the potatoes planted slightly deeper than the tomatoes. Be sure to give the tomato plants enough space to grow, and consider using a trellis or other support structure to maximize space.

4. Companion Planting

Companion planting is the practice of growing certain crops together to achieve specific benefits. Growing potatoes and tomatoes together is an example of companion planting. Other plants that are often grown alongside potatoes and tomatoes include basil, marigolds, and peppers.

How to Plant

When companion planting, be sure to consider the needs of each crop and how they will interact with each other. For example, basil is a good companion plant for both potatoes and tomatoes because it repels pests and attracts beneficial insects. Marigolds are also good companions because they deter nematodes and other pests.

Frequently Asked Questions

1. Can I plant potatoes and tomatoes together in containers?

Yes, you can plant potatoes and tomatoes together in containers. Be sure to use a large container to accommodate both plants, and keep the soil consistently moist.

2. How far apart should I plant potatoes and tomatoes?

When planting potatoes and tomatoes together, space them about 12-18 inches apart to give each plant enough room to grow.

3. Can I plant other vegetables with potatoes and tomatoes?

Yes, there are many vegetables that can be grown alongside potatoes and tomatoes, such as peppers, beans, and cucumbers. Just be sure to consider the needs of each crop and how they will interact with each other.

4. How often should I water my potato and tomato plants?

Potatoes and tomatoes need consistent moisture to grow well. Water them deeply once or twice a week, depending on your climate and soil type.

5. Do I need to fertilize my potato and tomato plants?

Potatoes and tomatoes benefit from regular fertilization. Use a balanced fertilizer with equal amounts of nitrogen, phosphorus, and potassium, and apply it every 4-6 weeks during the growing season.


Growing potatoes near tomatoes may seem like an unusual combination, but it has many benefits. By repelling pests, improving soil health, increasing yield, and utilizing companion planting techniques, these two crops can thrive together. Consider adding potatoes and tomatoes to your garden this year and see the results for yourself.


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