Zucchini are some of the most popular vegetables to grow in backyard gardens, but they can be prone to a number of different pests, including cucumber beetles, squash bugs, and squash vine borers. Zucchini plants may also fail to produce fruit due to a lack of pollination and other factors. The good news is these issues can be easily fixed with the help of companion plants. The following vegetables, flowers, and popular herbs make good companion plants for zucchini because they encourage natural pest control and provide other benefits.
9 Tips for Companion Planting Vegetables to Boost Harvests
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Blue Hubbard Squash
Squash bugs and squash vine borers can devastate zucchini crops and leave you with wilted plants or damaged fruit. One of the best ways to deter these troublesome insects is to lure them away from your zucchini crops by planting Hubbard squash nearby as a trap crop. Borers and squash bugs generally prefer the taste of this winter squash, so they’ll migrate to these plants and leave your zucchini alone.
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Dill
The flowers of dill will attract pollinators to your garden, which can help pollinate your zucchini plants and boost your harvest. What’s more, dill flowers are irresistible to parasitic wasps that will feed on squash vine borers. Even after dill bolts in the summer heat, you can leave your plants in place in your garden to help attract these beneficial insects for natural pest control.
Nasturtiums boast attractive orange and yellow flowers that draw hummingbirds and other pollinators to your garden beds to help pollinate your zucchini. Nasturtium also can act as a trap crop for slugs and snails, which generally prefer these plants to many other veggies. For a truly stunning and space saving display, try planting climbing nasturtium which can use the same trellising system as your zucchinis.
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Marigolds
Marigolds can help to draw pollinators and beneficial insects such as lacewings to your vegetable patch. If your zucchinis have suffered from aphids in previous years, adding marigolds to your garden can keep these troublesome pests away. Marigolds are also very easy to grow from seed and you can choose between dwarf varieties or full-sized plants depending on the size of your garden.
If you’ve heard of the Three Sisters gardening method, you’re probably aware that winter squash, corn and beans grow well together. Zucchini can be substituted for winter squash in this plant partnership, because it's also a good companion for corn and beans. Zucchini vines even may be able to use cornstalks as a natural support, eliminating the need for extra trellising.
How to Harvest Corn at its Peak for the Best Flavor
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Sunflowers
Similar to corn, sunflowers have tall, sturdy stalks that can serve as supports for climbing zucchini vines. Sunflowers are also very attractive to bees and other pollinators, which love the rich nectar and pollen of these flowers. Planting sunflowers with your zucchini can boost the pollination rates of your zucchini plants and result in a larger harvest.
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Borage
Borage is a useful plant to keep in garden beds for a number of different reasons. Pollinators love its bright blue flowers and planting borage can help increase the activity of beneficial insects near you zucchini plants too. If you’re new to working with borage, the edible flowers make pretty salad toppers and ice cube accents, while the leaves have a refreshing cucumber flavor that’s delicious in homemade salads.
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Beans and Peas
Beans, peas, and other legumes can naturally improve your garden soil by providing nitrogen to nearby plants. Interplanting zucchinis with legumes can give your zucchini vines a natural boost of nutrients. Even better, zucchinis, beans, and peas can all use the same trellising system, saving you time and gardening space too.
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Radishes
Cucumber beetles are small, yellow and black insects that can riddle your zucchini with holes and transmit bacterial wilt to your plants. Planting radishes near your zucchini can repel these destructive insects. Radishes are also small and fast growing, so you can easily maximize your garden space by planting them beneath your zucchini vines.
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Garlic
Garlic and other members of the allium family, such as onions, chives and leeks, are well-known for the pest repelling abilities. These plants are also highly attractive to pollinators and beneficial insects when they’re allowed to flower. Planting garlic around your zucchini plants is a smart way to utilize garden space. Just keep in mind that garlic is a slow-growing crop that is generally planted in the autumn before you intend to harvest it.
Radishes, peas, peppermint, dill, parsley, oregano, and even flowers like marigolds or nasturtiums are a few other options for gardeners. Most importantly, zucchini and squash should grow with plants that also need regular watering but don't take up too much space.
Potatoes can also spread diseases such as late blight, which can also affect zucchinis. Cucumbers and pumpkins should not be planted next to zucchinis as they belong to the same family (Cucurbitaceae) and therefore attract similar pests and diseases.
Marigolds can help to draw pollinators and beneficial insects such as lacewings to your vegetable patch. If your zucchinis have suffered from aphids in previous years, adding marigolds to your garden can keep these troublesome pests away.
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.
Beans. Bush beans work well to repel garden beetles and other pests that bore into zucchini plants and vines. Beans also release beneficial nitrogen back into the soil as they grow, which feeds nearby zucchini and boosts their fruit production.
Zucchini can offer some shade and ground cover for peppers and the two crops grow well together. Peppers do not add any specific benefit for zucchini, but you can grow both together and have a good crop of both.
Companion planting is also worth a try, using repellent plants that deter the squash bug. They include catnip, tansy, radishes, nasturtiums, marigolds, bee balm and mint. The second line of defense is Mechanical and Physical Strategies.
Natural Pest Control and Pollination. Incorporating flowers like nasturtiums and marigolds not only repels pests but also attracts pollinators to your zucchini plants. Establishing a garden environment that invites beneficial insects ensures natural pest control and assists in pollination, crucial for fruit development ...
One of the best ways to control squash bugs and keep your cucurbits healthy is to use an effective control product proven to fight difficult squash bugs. Sevin Insect Killer Concentrate and Sevin Insect Killer Ready to Spray kill squash bugs and more than 500 other insect pests, including stink bugs, by contact.
Marigold companion planting enhances the growth of basil, broccoli, cabbage, cucumbers, eggplant, gourds, kale, potatoes, squash and tomatoes. Marigold also makes a good companion plant to melons because it deters beetles. Beans and cabbage are listed as bad companion plants for marigolds.
Brassicas: Brassicas such as broccoli, cauliflower, and cabbage are not good companion plants for peppers as they require similar nutrients from the soil, which can lead to competition and reduced yield. They also attract pests such as flea beetles and cabbage worms that can damage pepper plants.
Avoid planting zucchini and summer squash with all other vining plants which include cucumbers and sweet potatoes as well as pumpkins, winter squashes, and melons.
Yes, and yes! Coffee beans are rich in minerals such as magnesium, calcium, phosphorus, nitrogen, and potassium. Phosphorus and potassium improve yields, and nitrogen is involved in photosynthesis, which helps plants grow faster. Ground coffee is excellent for both house and garden plants.
A “hill” of three or four seeds sown close together is another way to plant squash in the garden. Allow five to six feet between hills. You can plant bush types, with very short vines, in closely spaced hills, or in closely spaced rows, with only two to three feet between rows or hills.
It's not a good idea to mix zucchini or summer squash with another vining ground crop. For example, don't plant cucumbers and zucchini together, as the vines will become enmeshed and may even choke one another out.
Squash bugs, squash vine borers, cucumber beetles and other pests can attack zucchini. Check out our pest guides below to find out how to identify common zucchini pests... Click on a pest to be taken to a page full of useful information about how to identify it and prevent problems.
Plants in the same family as zucchinis, melons and pumpkins should not be planted directly next to cucumbers. The same applies to Jerusalem artichokes, lovage, sage, radishes, radishes and tomatoes.
Introduction: My name is Arielle Torp, I am a comfortable, kind, zealous, lovely, jolly, colorful, adventurous person who loves writing and wants to share my knowledge and understanding with you.
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