15 Plants You Should Never Grow Next to Each Other
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Choosing the right combination of plants can make all the difference in gardening. Some plants naturally work well together, helping each other thrive and grow. On the other hand, certain plants should never be grown next to each other as they can hinder growth or attract unwanted pests and diseases.
Here, we will discuss 15 plants you should avoid growing next to each other in your garden to ensure a successful and healthy harvest.
Tomatoes and Corn
While tomatoes and corn are popular summer crops, they should not be planted next to each other. Tomatoes are heavy feeders and quickly deplete the nutrients in the soil, while corn is also a heavy feeder but takes up a lot of space. As a result, planting them next to each other can lead to stunted growth and poor yields for both plants.
Cucumbers and Sage
Sage is known for its strong scent, which can repel pests like cucumber beetles. However, this same scent can also hinder cucumber growth by inhibiting their pollination process. It’s best to keep these two plants separate in your garden.
Beans and Onions
Beans are nitrogen-fixing plants that help replenish nutrients in the soil, while onions are heavy feeders that deplete the soil quickly. Planting these two together can lead to nutrient imbalances and poor growth for both plants.
Potatoes and Tomatoes
Potatoes and tomatoes belong to the nightshade family and are susceptible to similar diseases, such as blight. Planting them next to each other can increase the chances of spreading diseases between the two crops.
Lettuce and Celery
Lettuce and celery may seem like good companions because they prefer cool weather and require similar water levels. However, celery produces psoralen, which can inhibit lettuce growth and cause it to turn bitter.
Strawberries and Cabbage
Strawberries attract slugs, which can feed on cabbage leaves. Planting these two together can damage the crops. It’s best to keep your cabbage separated or use natural pest control methods to protect it.
Asparagus and Garlic
Asparagus is a long-term crop that requires a lot of space and nutrients, while garlic has shallow roots and can grow quickly. When planted together, garlic can compete for the limited nutrients and stunt the growth of asparagus.
Peppers and Beans
Peppers are heavy feeders that require a lot of nutrients to produce abundant fruits. On the other hand, beans fix nitrogen in the soil, making it less available for peppers. Planting these two together can result in poor growth and yields for both plants.
Eggplant and Fennel
Fennel produces a chemical compound called anethole, which inhibits the growth of nearby plants, including eggplants. To avoid stunted growth and reduced yields, keep these two plants separated in the garden.
Potatoes and Squash
Potatoes are heavy feeders that require a lot of nutrients, while squash is known for suppressing weeds. However, squash can compete with potatoes for nutrients, resulting in smaller potatoes and lower yields. It’s best to plant them separately or use raised beds to prevent competition.
Carrots and Dill
Dill attract beneficial insects such as ladybugs but can also attract pests like aphids. Planting it next to carrots can increase the chances of pest infestations and affect carrot growth. It’s best to keep dill away from carrots or use companion planting techniques to repel pests.
Tomatoes and Cabbage
Cabbage is a heavy feeder that requires a lot of space and nutrients, similar to tomatoes. When planted together, cabbage and tomatoes can compete for resources, leading to stunted growth and smaller yields for both plants.
Mint and Parsley
Mint is a vigorous plant that can quickly take over its surroundings and inhibit the growth of nearby plants. Parsley, in particular, is sensitive to mint’s invasive nature and can struggle to grow when planted next to it.
Radishes and Hyssop
Hyssop is a great companion plant because it attracts beneficial pollinators and repels pests. However, planting it next to radishes can hinder their growth and affect the size and flavor of the root vegetable, as hyssop produces allelopathic compounds that can impede the germination of radish seeds.
Cucumber and Basil
Basil is known for its strong aroma, which can help repel pests such as cucumber beetles. However, this same scent can also inhibit cucumber pollination and reduce yields. It’s best to keep these two plants separate in your garden.
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