Cucumber Companion Plants: Best Plants to Grow Together with Cucumbers and Plants to Avoid

Companion planting is an age-old gardening technique that involves strategically planting plants together or near each other to enhance growth, deter pests, and promote overall garden health.

When it comes to cucumbers, selecting the right companions can make a significant difference in their growth and productivity.

In this article, we’ll explore the art of companion planting for cucumbers and discover what plants thrive alongside these versatile vegetables and which ones do not.

Related Reading: Health benefits of cucumbers

What is companion planting ( Understanding Companion Planting).

Companion planting is built on the concept that certain plants have beneficial relationships when grown in close proximity.

This can involve mutual protection from pests, improved nutrient uptake, and overall enhanced well-being for the plants involved.

Factors to consider in companion planting for Cucumbers.

By considering the factors below, you can create a well-balanced and harmonious garden environment where cucumbers and their companions thrive together, promoting overall garden health and productivity.

1. Growth Patterns

Choose plants with complementary growth habits, like tall sunflowers or corn for shade and low-growing herbs for filling in spaces.

2. Pest Repellent Qualities

 Opt for companions like nasturtiums and marigolds that naturally deter cucumber pests, reducing the need for pesticides.

3. Soil Compatibility

   Pair plants with similar soil preferences to ensure balanced nutrient uptake and long-term soil health.

4. Nutrient Cycling and Fixation

 Include nitrogen-fixing plants like beans to enhance soil fertility for nitrogen-hungry cucumbers.

5. Resource Competition

Avoid plants that compete heavily for resources; select companions with different nutrient requirements.

6. Companion Planting Layouts

Experiment with layouts like the Three Sisters Garden for a synergistic approach benefiting all plants involved.

7. Succession Planting

Implement succession planting for a continuous harvest, preventing vacant spaces attractive to pests.

8. Aromatic Companions

Integrate aromatic herbs and flowers such as basil, dill, nasturtiums, and marigolds to confuse or repel pests.

9. Diversity

 Aim for a diverse mix of companions to encourage a balanced ecosystem and reduce the risk of pest outbreaks.

10. Observation and Adaptation

Regularly observe interactions between plants, adapting strategies based on garden-specific needs and conditions.

Plants to Plant together with Cucumbers

When planning your cucumber pair plant, consider the following companions to foster a harmonious and thriving garden.

1. Herbs Plants.

Examples include; Dill

Cucumbers benefit from the aromatic presence of herbs like basil and dill. These herbs help deter pests that commonly afflict cucumbers, such as aphids and spider mites. Additionally, the fragrance of basil can improve cucumber flavour, making them a delectable pairing in the garden.

2. Vegetables ( Nitrogen Fixers )

Examples include, Radishes and Beans

Radishes are known for their ability to deter cucumber-loving pests, including cucumber beetles. Planting radishes as a companion not only helps protect cucumbers but also offers an additional harvest in the form of crisp, peppery radishes. Beans, on the other hand, provide a symbiotic relationship by fixing nitrogen in the soil, enriching it for the cucumber plants.

Beans, whether bush or pole varieties, serve as advantageous companion plants for cucumbers. Being nitrogen-fixing plants, they convert atmospheric nitrogen into a usable form for other plants. Given cucumbers’ high nutrient needs, the nitrogen supplied by beans enriches the soil, promoting robust growth in cucumber plants. The same nitrogen-fixing benefits apply to peas as well.

Radishes serve as superb companions for cucumbers, mainly due to their soil-enhancing properties. As radishes mature, their roots contribute to breaking up compacted soil, enhancing aeration and drainage. This is advantageous for cucumber plants, which thrive in well-drained soil. Furthermore, radishes act as natural repellents for cucumber beetles, a prevalent pest that poses a threat to cucumber vines.

3. Fruits

Examples, Sunflowers and Corn

Tall sunflowers or corn planted near cucumber vines can offer shade during the hottest parts of the day, creating a microclimate that benefits cucumber plants. This shading effect helps prevent cucumbers from becoming stressed or overheated, promoting healthier growth and better fruit development.

Corn ( tall and Shady ) is a great cucumber companion plant because its tall stems provide shade.  It also helps deter pests like cucumber beetle.

Sunflowers are excellent companions for cucumbers, thanks to their tall stature and broad leaves. When planted alongside cucumbers, sunflowers offer shade, shielding the delicate cucumber plants from intense heat. Additionally, the robust sunflower stalks act as a natural trellis, offering support for the climbing cucumber vines.

4. Nature’s Pest Control.

Example: Marigolds

Marigolds make great companions for cucumbers because of their ability to repel pests. The potent scent of marigolds serves as a natural deterrent for aphids and other harmful insects that commonly affect cucumber plants. Furthermore, marigolds attract pollinators like bees and butterflies, contributing to the successful fruiting process.

5. The Pollinator Magnet

Example is the Borage

Borage functions as a genuine attraction for pollinators, making it an ideal companion for cucumbers. Its vivid blue flowers entice bees and other pollinators, guaranteeing effective pollination of cucumber blossoms and, consequently, fostering abundant fruit development and increased cucumber yield.

6. Repelling Pests with Scent

Example is Chives

Chives not only enhance the taste of your culinary creations but also serve as a deterrent to pests. The robust aroma of chives is effective in repelling aphids, Japanese beetles, and other common cucumber pests, making them a valuable companion for safeguarding your cucumbers.

Plants to Avoid Planting Near Cucumbers.

Companion planting brings various advantages, but it’s essential to steer clear of certain plants near cucumbers to prevent potential negative interactions.

Avoid planting cucumbers near,

  • Potatoes, as they are both susceptible to fungal disease blight.
  • Aromatic herb plants like sage and basil as these can inhibit growth of cucumbers
  • Melons – they are both the same family so susceptible to the same pests increasing the chances of a pest wipe-out.


Incorporating companion planting techniques into your cucumber garden not only enhances the visual appeal but also contributes to a thriving and sustainable ecosystem. Experiment with different combinations and observe the positive effects on cucumber growth, flavour, and pest resistance. By fostering these symbiotic relationships, you can enjoy a bountiful cucumber harvest while promoting a healthier and more resilient garden. Happy planting!.

Next Reading: Why are my cucumbers plants turning Yellow.

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