13 Companion Plants to Grow Next to Cucumbers for a Larger Harvest

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Few things compare to the fresh taste of cucumbers straight from your garden. Whether you’re growing long slicers or small pickling varieties, harvesting your own is always rewarding.

Cucumbers grow best when planted near the right neighbors. Certain plants can help them grow stronger, keep pests away, and improve soil, while others may compete for nutrients or attract problems.

Choosing supportive companions can lead to a healthier, more productive harvest. Here are 13 plants to grow next to cucumbers for a bigger, better crop.

Borage

Borage is a fast-growing annual that makes an excellent companion plant in the garden, especially for cucumbers. One of its biggest benefits is its ability to attract pollinators and beneficial insects, such as bees and predatory wasps, which help improve cucumber yields and control pests naturally.

However, borage tends to grow large and bushy, so regular pruning is essential to prevent it from overwhelming nearby cucumber plants.

As a bonus, borage flowers are edible and have a subtle, refreshing cucumber-like flavor. They make a great addition to salads, drinks, or garnishes, offering both visual appeal and a mild, crisp taste.

Chives

Chives are an excellent companion for cucumbers, offering natural pest control. Their distinct aroma is a natural deterrent to cucumber beetles—one of the most destructive pests that can harm cucumber plants. By planting chives nearby, you create a protective barrier that helps keep these pests at bay, reducing the need for chemical interventions.

Marigolds

Marigolds are pretty much the superheroes of the vegetable plot. Very few crops don’t benefit from this pretty orange-flowered plant!

The scent of marigolds helps to repel white flies, thrips, and squash bugs and deter deer and squirrels, all of which can wreak havoc on your cucumber crop. Marigolds also attract beneficial insects that improve pollination rates in cucumber plants.

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Carrots

Planting carrots and cucumbers in the same area is a great way to maximize the use of space in your garden. Fast-growing cucumber plants climb rapidly upwards, casting shade on carrots planted below. In turn, the carrots act as ground cover, reducing evaporation from the soil and suppressing weeds.

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Onion

Growing onions through the warmer months can be tricky as they struggle to grow well in the hot sun. However, growing onions in the shade of a row of cucumber plants is a game-changer, resulting in giant, crisp onions that flourish in damper ground. In return, the smell of onion leaves will deter troublesome pests that like to colonize cucumber plants.

Corn

Corn plants grow strong and tall, creating a natural framework that supports your cucumber plants. Corn should always be grown in a block to maximize pollination, so plant cucumbers around the edges to ensure they are easy to harvest. This companion planting method is ideal for smaller cucumber plants such as pickling and mini snack-size varieties.

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Nasturtiums

If you struggle with aphids on your cucumber plants, grow some nasturtiums nearby. These colorful edible plants act as a trap crop, luring away aphids and leaving your cucumbers to thrive. Nasturtiums are also great for attracting beneficial insects, such as ladybugs, which help reduce aphid populations throughout the garden.

Dill

The delightful yellow flowers of dill plants attract parasitoid wasps – nature’s pest control team! These flying insects feed on common garden pests, reducing the need for insecticides in the garden. Dill is also the perfect herby accompaniment to cucumbers, particularly if you’re a big fan of pickles.

Peas

Pea plants can take nitrogen from the atmosphere and lock it into the soil around their roots, making this essential nutrient available to your cucumbers and other plants. Grow single rows of cucumbers and peas side-by-side to boost growth while ensuring both crops are easy to harvest.

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Radishes

Radishes are a fast-growing crop that benefits from the shade provided by cucumber plants. In turn, they provide excellent ground cover, helping to suppress weeds and reduce evaporation of moisture from the soil. Radishes can be ready to harvest in just a few weeks, so remember to sow them at regular intervals for a continuous crop.

Lettuce

Lettuce flourishes in cool temperatures and consistently moist soil, producing crisp, tender leaves that are perfect for fresh salads. Its shallow root system allows it to grow easily in garden beds, containers, or raised beds, where moisture levels can be carefully maintained to support rapid growth.

Paired with the right companion plants, lettuce benefits from natural shade and improved soil conditions, helping it stay hydrated and extend its growing season. Under ideal conditions, it matures quickly, often ready for harvest in less than 30 days, making it a rewarding addition to any vegetable garden.

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Celery

Celery pairs well with cucumber. Its shallow root system won’t compete with cucumbers for deep soil nutrients. Celery also thrives in the same cool-season conditions, making it a great companion for an extended growing season.

Garlic

Garlic gives off a pungent aroma that is thought to repel many common garden pests. This low-growing allium will not compete with cucumbers for nutrients and will benefit from being grown in the shade. Studies have also shown that garlic can help reduce fusarium wilt, a fungal disease that can quickly decimate cucumber plants.

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