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To deter squash bugs, plant repellent companions like nasturtiums, radishes, and marigolds around your squash.
These plants confuse pests, mask the scent of your squash, and attract beneficial insects that prey on squash bugs.
If you’re wondering what to plant with squash to deter squash bugs, you’re in the right place.
In this post, we’ll explore the best companion plants to keep squash bugs away and help your squash thrive.
Let’s dig in.
What to Plant With Squash to Deter Squash Bugs
Planting the right companions with squash can naturally deter squash bugs and reduce their damage.
Here’s why these plants work and which ones to choose.
1. Nasturtiums
Nasturtiums are a classic trap crop for squash bugs.
They release a strong peppery scent that masks the smell of squash, making it harder for squash bugs to find your plants.
Plus, nasturtiums attract predatory insects like spiders and ground beetles that feed on squash bug eggs and nymphs.
Plant them around the border of your squash patch for the best effect.
2. Radishes
Radishes make excellent companions for squash because they repel squash bugs and other pests.
Their fast growth means you can harvest them before squash vines take over the space.
As a bonus, radishes loosen the soil, which helps squash roots spread more easily.
Let a few radishes bolt to flower and they’ll attract beneficial wasps that parasitize squash bug eggs.
3. Marigolds
Marigolds are a must-plant with squash to deter squash bugs.
Their roots release a compound that kills nematodes, and their flowers emit a scent that repels squash bugs.
French marigolds are especially effective.
Plant them densely around your squash to create a fragrant barrier.
4. Catnip
Catnip isn’t just for cats.
It contains a natural compound called nepetalactone that repels squash bugs and other insects.
Plant catnip near your squash, but keep it in a pot if you don’t want it to spread.
Crush a few leaves and rub them on your hands before checking your plants to mask your own scent.
5. Dill and Fennel
Dill and fennel attract beneficial insects like ladybugs and lacewings that eat squash bug eggs.
They also repel squash bugs with their strong aroma.
Just be careful—dill and fennel can inhibit squash growth if planted too close, so give them some space.
Other Ways to Keep Squash Bugs Away
Companion planting is powerful, but combining it with other strategies gives you the best results.
1. Rotate Your Crops
Squash bugs overwinter in garden debris and emerge in spring.
If you plant squash in the same spot every year, you’re giving squash bugs a free home.
Rotate squash with unrelated crops like corn or beans to break their life cycle.
2. Use Row Covers
Floating row covers physically block squash bugs from reaching your plants.
Just remember to remove the covers when squash starts flowering so pollinators can get in.
3. Handpick and Destroy
Check the undersides of leaves early in the morning for squash bug eggs and adults.
Drop them into soapy water to kill them.
This simple habit can dramatically reduce squash bug populations.
4. Keep the Garden Clean
Remove spent squash vines and garden debris at the end of the season.
This eliminates overwintering sites for squash bugs.
Tips for Planting Companions With Squash
To get the most out of companion planting, follow these simple tips.
1. Plant in Polycultures
Don’t just plant one companion—mix several together.
A diverse garden confuses squash bugs and supports a healthy ecosystem of beneficial insects.
2. Timing Matters
Start companion plants at the same time as your squash or slightly before.
This way, their repellent properties are active when squash bugs first appear.
3. Use Flowers Liberally
Flowering companions like marigolds and nasturtiums provide nectar for predatory insects.
The more beneficial insects you attract, the fewer squash bugs you’ll have.
4. Don’t Forget Herbs
Herbs like mint, oregano, and thyme also deter squash bugs.
Plant them in pots near your squash to keep them contained and easy to move.
5. Monitor and Adjust
Every garden is different.
Pay attention to what works in your space and adjust your companion planting strategy each season.
So, What to Plant With Squash to Deter Squash Bugs?
To deter squash bugs, plant nasturtiums, radishes, marigolds, catnip, and dill around your squash.
These companions repel squash bugs, attract beneficial insects, and create a healthier garden overall.
Combine them with crop rotation, row covers, and regular monitoring for the best results.
With a little planning, you can keep squash bugs at bay and enjoy a bountiful harvest.
Happy planting.