10 Plants You Should Never Grow Next to Your Tomatoes (2024)

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10 Plants You Should Never Grow Next to Your Tomatoes? ›

Cabbage, broccoli, cauliflower, kale, Brussels sprouts, and kohlrabi can stunt the growth of your tomato plant because they out-compete them for the same nutrients. These vegetables are in the brassica family.

Cabbage, broccoli, cauliflower, kale, Brussels sprouts, and kohlrabi can stunt the growth of your tomato plant because they out-compete them for the same nutrients. These vegetables are in the brassica family.

Planting cucumbers and tomatoes right next to each other is often not recommended. These two plants often have similar requirements for nutrients, water and light, which can lead to competition. Both plants are heavy feeders and require a lot of nitrogen for healthy growth.

Zucchini and tomatoes can be grown as close neighbors and will make satisfactory companion plants. Both vegetables thrive in the same environmental conditions, so a garden plot that is ideal for one plant is therefore ideal for the other. They both need a location with full sun and benefit from nutrient-rich soil.

Garden cress (Lepidium sativum), common beans (Phaseolus vulgaris), celery (Apium graveolens) and most cabbages (Brassica sp.) are generally considered suitable companion plants for tomatoes. Onions (Allium cepa), leeks (Allium ampeloprasum) and garlic (Allium sativum), too, are plants that grow well with tomatoes.

What flowers to plant with tomatoes? Nasturtiums, marigolds, and borage are a few. Sunflowers are also an excellent companion for tomatoes. There are any number of ways to combine a few of your favorite companion plants with your tomato crop.

Cucumbers and tomatoes can be planted by each other as they share similar growing habits and therefore you can grow tomatoes by cucumbers. Greg Volente from Greenhouse Today explains that: 'Cucumbers and tomatoes are two vigorous growers in a spring garden. They're both vining plants and share similar basic needs.

Brassicas: Plants like broccoli, cabbage, and cauliflower can compete with cucumbers for the same nutrients in the soil. They also attract pests that can damage cucumber plants, such as flea beetles and cabbage worms.

Tomatoes. Although it's usually recommended to not plant tomatoes and peppers right after each other in the same bed every year, they can be grown together in the same garden bed (and then rotated to another bed next season).

Brassicas: Almanacs and home gardeners recommend avoiding planting brassicas (cabbage, broccoli, kale, collards, cauliflower) near peppers because they require different soil acidity levels and can deter pepper plant growth.

What grows best with peppers? ›

In a raised bed, various herbs such as basil, parsley or dill are good companions for peppers. Lettuce, carrots and onions also make good neighbours for peppers in a raised bed.

Although it's usually recommended to not plant tomatoes and peppers right after each other in the same bed every year, they can be grown together in the same garden bed (and then rotated to another bed next season).

Marigolds are considered companion plants to tomatoes in that they protect and enhance the growth of your tomatoes. So not only are these flowers pretty but they also do important jobs in the garden. What "jobs" do marigolds do in your garden? Marigolds help attract bees and other beneficial insects to tomato plants.

Support structures such as cages and trellises allow you to maximize your harvest by keeping the plants and fruit off the ground. The photos below will give you some ideas about some of the different ways you can support your plants and achieve true tomato transcendence this season.