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Planting next to yellow squash works best when you choose companions that repel pests, attract pollinators, and don’t compete for the same nutrients.
If you’ve been wondering what to plant next to yellow squash, you’re in the right place because the right neighbors can make a huge difference in your harvest.
Yellow squash is a heavy feeder and a magnet for pests like squash bugs and cucumber beetles, so its companions need to earn their spot.
In this post, we’ll walk through what to plant next to yellow squash, what to keep far away, and why these pairings actually work.
Let’s dig in.
What to Plant Next to Yellow Squash
When figuring out what to plant next to yellow squash, focus on companions that fight pests, boost pollination, or improve the soil.
Here are the best options and why they work so well.
1. Nasturtiums
Nasturtiums are one of the best things to plant next to yellow squash because they act like a trap crop.
Aphids and squash bugs flock to nasturtiums first, which keeps them off your squash.
As a bonus, the bright flowers draw in pollinators that help your yellow squash set more fruit.
2. Marigolds
Marigolds are a classic companion when you plant next to yellow squash because their roots release a compound that repels nematodes.
Their strong scent also confuses squash bugs and other pests looking for a meal.
French marigolds work especially well tucked right around the base of your squash plants.
3. Radishes
Radishes are a smart choice to plant next to yellow squash because they mature fast and don’t hog space.
They loosen the soil as they grow, which helps squash roots spread more easily.
Let a few radishes bolt and they’ll attract beneficial insects that prey on squash pests.
4. Beans and Peas
Beans and peas are great to plant next to yellow squash because they fix nitrogen in the soil.
Since yellow squash is a heavy feeder, this natural fertilizer gives it a steady nutrient boost.
Just give beans and peas a trellis so they don’t smother the squash.
5. Borage
Borage is an underrated pick when deciding what to plant next to yellow squash.
Its star-shaped flowers attract bees in droves, which means better pollination and more squash.
Borage also deters tomato hornworms and cabbage worms nearby, so it pulls double duty.
6. Corn and Sunflowers
Corn and sunflowers work as tall companions to plant next to yellow squash by providing light shade.
Yellow squash loves full sun, but a little afternoon shade in hot climates prevents scorching.
Just keep them on the north side so they don’t block morning light.
What Not to Plant Next to Yellow Squash
Knowing what to plant next to yellow squash also means knowing what to avoid.
Some plants compete too hard or attract the same pests, so keep these away.
1. Other Squash and Melons
Avoid planting other squash, melons, or cucumbers next to yellow squash.
They’re all in the cucurbit family and share the same pests and diseases.
Planting them together creates a buffet for squash bugs and powdery mildew.
2. Potatoes
Potatoes are a poor choice to plant next to yellow squash because they compete for water and nutrients.
Both are heavy feeders, so they’ll starve each other in the same bed.
Potatoes also attract pests that can spread disease to your squash.
3. Fennel
Fennel releases compounds that stunt the growth of many garden plants, including yellow squash.
It’s best planted in its own corner far from your squash patch.
4. Pumpkins
Pumpkins sprawl just like yellow squash and compete for the same space and nutrients.
They also attract identical pests, doubling your squash bug problem.
Benefits of Companion Planting With Yellow Squash
Companion planting next to yellow squash isn’t just a nice idea, it’s a practical strategy.
The right companions repel pests, attract pollinators, and enrich the soil.
They also shade the soil, which keeps moisture in and weeds down.
And many companion flowers bring in predatory insects that eat squash pests for you.
That means less spraying and more squash on your table.
So, What to Plant Next to Yellow Squash?
What to plant next to yellow squash comes down to picking companions that repel pests, boost pollination, and feed the soil.
Nasturtiums, marigolds, radishes, beans, peas, and borage are all excellent choices to plant next to yellow squash.
Steer clear of other cucurbits, potatoes, fennel, and pumpkins to avoid competition and shared pests.
Get these pairings right and your yellow squash will reward you with a bigger, healthier harvest all season long.