Can Tomatoes Be Planted by Potatoes?

Tomatoes and potatoes are both members of the nightshade family and share some similarities in terms of their growing requirements. However, the question of whether tomatoes can be planted by potatoes is a controversial one, with different opinions and factors to consider.

Compatibility of Tomatoes and Potatoes

Many gardeners believe that planting tomatoes and potatoes together is not a good idea. While both crops have similar needs for soil, moisture, and nutrients, they also have some differences that can affect their growth and health. Tomatoes are heavy feeders and require a lot of nitrogen, while potatoes prefer a more acidic soil pH and need a good supply of phosphorus and potassium. If grown together, tomatoes may compete with potatoes for nutrients and space, and can affect the quality and yield of both crops.

Potential Benefits of Companion Planting

On the other hand, some gardeners advocate for companion planting of tomatoes and potatoes as a way to boost their productivity and health. Companion planting refers to the practice of growing two or more plants together for mutual benefits. For example, tomatoes are known to repel pests such as aphids and whiteflies, while potatoes are susceptible to these pests. By planting tomatoes next to potatoes, the tomatoes can act as a natural pest control for the potatoes. Additionally, the deep root system of tomatoes can help to break up compacted soil and improve aeration and drainage, which can benefit potatoes as well.

How to Plant Tomatoes and Potatoes Together

If you decide to plant tomatoes and potatoes together, there are some tips to follow to ensure the best results. First, choose varieties that have similar growing requirements and are compatible in terms of size and vigor. For instance, cherry tomatoes and fingerling potatoes are good companions, as they both have a compact growth habit and do not need a lot of space. Second, prepare the soil by adding organic matter such as compost or aged manure, which can improve soil fertility and structure. Third, space the plants properly to avoid overcrowding and competition for resources. Plant tomatoes about 18 inches away from potatoes, and give each plant enough room to grow and develop its own root system.

The Bottom Line

In conclusion, the question of whether tomatoes can be planted by potatoes depends on various factors, including soil quality, plant compatibility, and gardening practices. While some gardeners swear by companion planting, others prefer to keep these two crops separate for optimal growth and harvest. If you decide to experiment with planting tomatoes and potatoes together, do your research and follow the tips and guidelines to ensure a successful and productive harvest.