Growing cucumbers with their favorite plant friends does three things: manages pests, attracts pollinators, and improves yields.
More and more gardeners are learning to move away from monoculture systems (growing a single crop in one space). Research shows that diverse plantings, like growing companion vegetables and flowers, are better for crops because they support a wider range of species.
I plant as diversely as I can because I’ve noticed fewer pest outbreaks over the years from incorporating many different plant species into my garden.
It’s part of how I got into cut flower gardening in the first place.
This post covers which plants work best with cucumbers, which ones to avoid, and how to actually implement companion planting in your cucumber patch.
Want to learn how to grow cucumbers first? See my Complete Guide to Growing Cucumbers from Seed to Harvest.
Why Companion Planting Works for Cucumbers
Companion planting for cucumbers has these benefits:
1. Attracts beneficial insects
Flowers bring in parasitic wasps, hoverflies, lacewings, and ladybugs. These beneficial insects feed on aphids, cucumber beetlses, and other pests. Research shows that many comapnion plants support beneficial bugs throughout their lives helping to create a dynamic ecosystem in your garden.
2. Confuses or deters pests
Some strongly scented herbs and flowers may deter certain pests through scent. But the best (and most probable) use of aromatic plants is to confuse pests. They’ll have a harder time finding cucumbers with a variety of smells wafting around.
3. Improves pollination
Cucumbers need bees to transfer pollen from male flowers to female flowers. Companion flowers attract pollinators and keep them coming back for the duration of the garden season. Planting pollinator strips (rows of plants to attract pollinators) around and among your garden plants will help improve pollination and fruit set.
4. Maximizes space
Fast-growing spring crops like radishes or lettuce can be harvested before cucumber vines grow too large, so you can get twice the food out of the same space.
5. Fixes nitrogen (when planting beans or peas)
Beans and peas add nitrogen to soil through root nodules. Planting these alongside cucumbers and cutting them down (leaving the roots in the soil) once they’re finished will benefit cucumber plants.
But remember: companion planting isn’t a magic cure-all to your garden woes.
You still need rich soil, consistent watering, good air flow, and eyes out for pests at all times.
Companion plants are just another tool to help you succeed as a gardener.
Best Companion Plants for Cucumbers
Here are my favorite companion plants for cucumbers. This list isn’t exhaustive but just a few of my consistent favorites. If you have more you think I should add, pop them down in the comments below. 🙂
Herbs to Plant with Cucumbers
Dill
Dill is one of the absolute best companions for cucubmers.
Why it works: Dill flowers attract all sorts of beneficial insects. Not just pollinators, but also parasitic wasps, which help control aphids and cucumber beetles, and hoverflies and lacewings, which also help control aphids.
How to use: Plant dill alongside or in between cucumber plants. Let some flower for the beneficials. Dill flowers and seeds are edible.
Basil
Basil is easy to tuck in next to cucumber plants and benefits from shade in the afternoon. Choose a purple-leafed basil to add more color to your garden.
How to use: Edge the garden bed with basil. For culinary use, harvest fresh growth regularly to keep basil bushy and productive and do not allow basil to flower. If using in the vase, allow basil to flower and cut stems early in the day to reduce wilting.
Flowers to Attract Pollinators and Beneficial Insects
Flowers are an essential, yet overlooked, part of every vegetable garden. Even if you just want to grow vegetables, you must plant a few flowers as well. The right flowers will attract pollinators and beneficial insects, which vegetable gardens need to fruit.
For more on this, read my post: Does companion planting work? 9 practical reasons to grow flowers in your veggie patch.
Marigolds
This may be the most popular companion flower for vegetable gardens, and with good reason.
Marigolds repel many pests, especially nematodes in the soil. They also attract pollinators and are a cheerful flower to have in the garden.
How to use: Plant dwarf marigolds (typically French and Signet types) as a border around your cucumber bed or trellis. Taller marigolds (African) should be planted where they won’t shade bush-type cucumbers.
Nasturtiums
These flowers are great to have in the garden as a trap crop for aphids.
NOTE: Trap crops are plants that lure pests away from your main crop. You can then deal with the pests by hand-picking, spraying neem oil, or disposing of the entire plant.
Nasturtiums have lily-pad-like leaves and a range of brightly colored flowers. Some have a vining habit, and some are more bushy, so keep that in mind as you choose varieties to grow.
Nasturtiums grow like a weed in some areas, but not mine! If you’ve struggled to grow nasturtiums in the past, here are my top tips: 1) Soak seeds before planting to speed up germination; 2) Direct sow in warm, well-draining soil; 3) Do not fertilize—nasturtiums like poor soil.
How to use: Plant nasturtiums around the edge of cucumber beds or at the base of trellises. If using as a trap crop, you may want to keep nasturtiums in a container for easy disposal, or plant them a little ways away from your main crop.
Calendula
Calendula is very easy to grow and prefers cooler temperatures. This flower will be able to tolerate some shade from the cucumber plant in the heat of summer. Calendula attracts beneficial insects like hoverflies and all kinds of pollinators.
I dry calendula flowers almost every year to make calendula oil and salve. This has worked great for eczema and to keep our skin healthy.
At the end of the season, I stop deadheading and allow the blooms to go to seed. Seeds are easy to save or to leave in place for volunteer plants the following year.
How to use: Use calendula as an accent plant in your garden bed. Remove spent flowers regularly for more blooms.
Sunflowers
Sunflowers are bee magnets. They just love the large flowers and happily emerge covered in pollen dust. Sunflower seed heads also attract birds like finches and cardinals. Birds that feed on insects are useful for controlling insects. They sometimes nibble on my berries if I forget to cover them in time, but I don’t mind too much since they do a much better job of going after caterpillars and other insect pests.
How to use: Use sunflowers as “thrillers” in your garden bed. Plant them in the center with low-growing bush cucumbers around the base.
Want to grow a cut flower garden with sunflowers? Check out my complete, beginner-friendly plan for a small cut flower garden.
Borage
Another pollinator powerhouse is borage. Borage produces abundant blue flowers that are beloved by bees.
Borage is also edible and tastes similar to cucumber—perfect for a cucumber garden! Additionally, borage grows a deep taproot that can help break up compacted soil. To reap the benefits, cut borage off at soil level when the plant is finished and leave the taproot to decompose in place over the winter.
Growing Companion Vegetables with Cucumbers
Companion plants do include vegetables! Here are my favorite companion vegetables to grow with cucumbers.
Beans (Bush and Pole)
Beans are good companion plants because they are strong enough to compete for nutrients with cucumbers. They also attract nitrogen-fixing bacteria to their roots and will improve soil health over time if you leave bean roots in the soil after the plant is finished.
How to use: Choose bush bean varieties to grow compactly at the base of a cucumber trellis. Or allow pole beans to share the trellis with cucumbers. Alternatively, grow pole beans on a teepee trellis and plant bush cucumbers at the base.
Peas (Shelling, Snap, Snow)
Like beans, peas are nitrogen fixers and not fussy growers. Unlike beans, peas prefer to grow in cool temperatures of spring or fall, not summer. You’ll need to be careful with timing to grow peas as companion plants, but it can be done.
Just think of peas as the first runner in a relay race and cucumbers as the second.
How to use: Plant peas along a trellis early in the growing season, as soon as soil is not too soggy, but while temps are still cool. When peas are producing and nearly finished, plant cucumber seeds on the other side of the trellis. Once peas are finished, cut plants to the ground, leaving roots in place. Cucumbers will overtake the trellis to finish out the season.
Lettuce, Spinach, and Leafy Greens
Lettuce, spinach, and other leafy greens are light feeders that don’t compete with cucumbers. Lettuce and spinach will also appreciate the light shade provided by cucumbers as the weather heats up, allowing for a longer harvest window.
Both leafy greens and cucumbers appreciate consistent moisture.
How to use: Plant lettuce, spinach, or other leafy greens in the shade of cucumber plants either in spring or at the end of summer for a fall harvest.
Beets and Radishes
Small root vegetables like baby beets and radishes can be planted as companions with cucumbers.
How to use: Plant these root vegetables where they’ll be partially shaded by cucumbers to avoid heat of the day. Give them enough space to develop their roots. Harvest when they’re young and tender.
Peppers
Peppers and cucumbers both thrive in warm, sunny conditions with rich soil and regular watering. Give peppers and cucumbers enough space to grow (as indicated on the back of your seed packet or plant tags) and both will thrive.
How to use: Plant pepers where the cucumber vines won’t shade them—south or west side of a cucumber trellis.
Cherry Tomatoes
In my garden, cherry tomatoes don’t mind growing alongside cucumbers. Cherry tomatoes, in my experience, are productive even with less than ideal conditions. Large tomatoes like slicers and beefsteak are more fussy and require more maintenance and nutrition to produce well.
Just space cherry tomatoes and cucumbers 18-24″ (45-60cm) apart and they’ll both do fine.
I also recommend choosing hybrid cherry tomatoes like Sun Gold or Supersweet 100 because they are especially vigorous growers.
My post on choosing tomato varieties can help you pick the right kind of tomato to grow.
How to use: Allow cherry tomatoes to share a trellis with cucumbers. Or, plant cherry tomatoes in a sturdy cage and grow bush cucumbers nearby.
More on companion planting with tomatoes in this post.
Green Garlic (Young Garlic)
Typically garlic gets planted in the fall, but if you missed that boat, good news: you can still plant garlic in the spring.
Just harvest it as green garlic, or young, underdeveloped garlic similar to green onions. It’ll have all the garlicky flavor but without needing to peel cloves.
Green garlic in particular has been proven to improve the growth of cucumbers (as shown in this study).
How to use: Plant a few garlic cloves in spring around your cucumber bed or trellis. Once garlic shoots are pencil-thick, you can harvest the whole plant.
Learn to grow garlic in this post.
What Not to Plant with Cucumbers
Some plants just don’t play well with cucumbers. Avoid stressing your cucumbers by keeping these vegetables away.
Squash and Zucchini
Summer and winter squash are nutrient- and space-hogs and will compete with cucumbers.
Squash also attract cucumber beetles and squash bugs which will also harm cucumber plants.
Keep these plants far enough apart so they get adequate food, room to sprawl, and good airflow. Healthy plants are less likely to be attacked by pests.
For companion plants that will actually support squash growth, read my post on companion plants for zucchini and squash.
Melons (Watermelon, Canteloupe, Honeydew)
Avoid planting melons and cucumbers next to each other. They attract the same pests, are susceptible to the same diseases, and compete for space.
For more resources on gardening, visit my beginner vegetable gardening page to get started.
Mediterranean Herbs (Sage, Rosemary, Lavender, Oregano, Thyme)
Good companion plants typically have similar growing requirements and balance each other out in what they give and take from the soil.
Cucumbers and Mediterranean herbs do not have this!
Sage, rosemary, lavender, oregano, and thyme particularly love hot and dry conditions, while cucumbers prefer more moisture.
Plus, the strong scents and aromatic oils of these herbs may affect the flavor of cucumber fruit.
Tips for Companion Planting Cucumbers
Companion planting cucumbers is simple if you follow these tips.
- Plant cucumbers and companions when they most like to grow—cool or warm season.
- Give each plant enough room to grow. Companion planting is not about crowding plants close together.
- Direct sow cucumbers ahead of companions. If using starts, allow cucumbers to get larger and established before adding companions.
- Choose diverse companions. You’re not limited to just one plant from this list! I recommend choosing a flower + herb or a flower + vegetable to plant with cucumbers.
- Don’t use pesticides. The best way companion plants (especiallly flowers) can help in the garden is by attracting good bugs. Pesticides don’t discriminate between good and bad bugs. Give the good bugs time to find and eliminate bad bugs on their own. Instead of pesticides, try hand-picking, covering plants, or insect traps.
Want more plants that attract beneficial bugs? See my post on 18 great companion flowers for vegetables.
Your Turn to Grow
Companion planting transforms cucumber growing into an ecosystem. By planting diversely, you’re creating a community where life of all kinds can thrive.
Gardens with many kinds of plants are more likely to thrive and experience reduced pest pressure.
Try it out and you’ll observe more bees, ladybugs, hoverflies, parasitic wasps, and even birds that help you out in the garden.
If you’re new to companion planting, just start simple. Choose a flower and an herb or vegetable. Plant them alongside your cucumbers and observe what happens.
Every garden is different and every gardener gardens differently. What works in my zone 6 garden might need adjustment in yours.
Companion planting is as much an art as it is science.
So experiment, observe, and adapt. Every season is an opportunity to grow a better garden and become a better gardener.
For more posts on growing a cottage vegetable garden try:
- 7 Themed Vegetable Garden Plans for a Small Raised Bed (Free Layouts)
- What Is a Potager Garden (And Why It’s the Only One You Need)
- Potager Garden Design: 8 Elements for a Kitchen Garden you’ll Never Want to Leave
- 9 Herbs for Flower Arranging to Add Fragrance and Texture
- 10 Perennial Herbs for a Beautiful Potager Garden
Quick FAQ: Cucumber Companion Planting Questions
Plant dill, nasturtiums, marigolds, beans, radishes, and pollinator-attracting flowers like zinnias and cosmos next to cucumbers. These companions deter pests, attract beneficial insects, fix nitrogen, or save space through succession planting.
Yes, but with caution. I’ve successfully grown a cherry tomato plant alongside cucumbers on the same trellis. Both are heavy feeders, so this pairing works better when each plant has ample space and rich soil. Your results may vary.
Yes. Peppers and cucumbers have similar growing requirements (warm weather, consistent water, full sun) and don’t compete excessively. Plant peppers near—but not directly under—cucumber trellises where they won’t be shaded.
Not recommended. Both are in the cucurbit family, attract the same pests (cucumber beetles, squash bugs, squash vine borers), and spread extensively. Keeping them separated reduces pest pressure and makes space management easier.
No. Zucchini is a type of squash (cucurbit family), so the same issues apply: shared pests, shared diseases (powdery mildew), and space competition. Plant these in separate garden areas.
Avoid planting melons, squash (including zucchini), and potatoes too close to cucumbers. These either compete for resources or share pests. Skip sage, rosemary, lavender, oregano, and thyme. These have incompatible growing conditions.
Other References:University of Florida IFAS Extension (2012); University of California Acgricultre and Natural Resources (2025)