What to Plant with Onions

Onions are a versatile and valuable addition to any garden. They can be used in a variety of different dishes and can even be preserved to use throughout the winter months. However, when it comes to planting onions, it is important to consider what other plants would be suitable to grow alongside them. In this article, we will explore some of the best plants to grow with onions to ensure a healthy and bountiful harvest.

Companion Plants for Onions

1. Carrots - Carrots are an excellent plant to grow alongside onions. This is because they help to aerate the soil with their long roots, which can help to prevent the soil from becoming too compacted. In addition, carrots and onions have different root depths, so they are less likely to compete with each other for nutrients and water.

2. Lettuce - Lettuce is another good companion plant for onions. This is because lettuce is a shallow-rooted plant that does not require a lot of space. It can be grown in the spaces between the rows of onions, helping to maximize the use of space in your garden. Lettuce also tends to grow quickly and can be harvested multiple times throughout the season.

3. Garlic - Garlic is a member of the same family as onions, so it makes sense that they can be grown together. Growing garlic alongside onions can help to deter pests such as onion flies and aphids, which can damage the onions. Garlic also has a strong scent, which can help to mask the smell of the onions and prevent pests from being attracted to them.

Plants to Avoid Growing with Onions

1. Peas - Peas are not a good companion plant for onions, as they both prefer similar soil conditions and will compete with each other for the same nutrients. In addition, peas can attract onion thrips, which can harm the onions.

2. Asparagus - Asparagus is another plant that should be avoided when planting onions. Both plants require a lot of nutrients and can compete with each other for space and resources. In addition, asparagus can attract onion maggots, which can damage the onions.

3. Beans - While beans are a good source of nitrogen for the soil, they are not a good companion plant for onions. This is because both plants require similar soil conditions and water, which can lead to competition for resources. In addition, beans can attract onion thrips, which can harm the onions.

Conclusion

When it comes to planting onions, it is important to consider what other plants would be suitable to grow alongside them. Carrots, lettuce, and garlic are all great companion plants for onions, as they can help to improve soil conditions, deter pests, and maximize space in your garden. However, it is important to avoid planting peas, asparagus, and beans with onions, as these plants can compete with them for resources and attract pests that can damage the onions. With these companion planting tips, you can ensure a healthy and bountiful harvest of onions in your garden.