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Planting next to yellow squash is one of the smartest moves you can make in your vegetable garden.
Companion planting with yellow squash helps with pest control, pollination, and making the most of your garden space.
If you’ve been wondering what to plant next to yellow squash, you’re in the right place.
The best companions for yellow squash are beans, corn, radishes, marigolds, and nasturtiums.
In this post, we’ll look at what to plant next to yellow squash, why these pairings work, and what you should keep far away from your squash patch.
Let’s dig in.
What to Plant Next to Yellow Squash
What to plant next to yellow squash comes down to a few key goals.
You want plants that repel pests, attract pollinators, or improve the soil without competing with your squash for nutrients.
Yellow squash is a heavy feeder and a sprawling grower, so its neighbors need to hold their own.
Here are the best choices when you’re deciding what to plant next to yellow squash.
1. Beans and Peas
Beans and peas are classic companions for yellow squash.
These legumes pull nitrogen from the air and fix it into the soil, which feeds your hungry squash plants.
Plant bush beans near your yellow squash so they don’t shade it out.
Pole beans can work too, but give them a trellis so they climb up instead of smothering your squash.
2. Corn
Corn is another great option for what to plant next to yellow squash.
The tall stalks give your squash some afternoon shade in hot climates.
In return, the squash’s prickly leaves can deter raccoons and other critters from raiding your corn.
This pairing is part of the famous Three Sisters method along with beans.
3. Radishes
Radishes are a sneaky-good companion for yellow squash.
They grow fast and mature before your squash vines take over the space.
More importantly, radishes repel squash bugs and cucumber beetles, two of the biggest pests for yellow squash.
Let a few radishes bolt and flower too, since their blooms attract beneficial insects.
4. Marigolds
Marigolds are a must when you’re figuring out what to plant next to yellow squash.
Their roots release a compound that fights nematodes in the soil.
The strong scent also confuses pests like squash bugs and whiteflies.
Plus, they look gorgeous tucked between your squash plants.
5. Nasturtiums
Nasturtiums are another flower that earns its spot next to yellow squash.
They act as a trap crop, luring aphids and beetles away from your squash.
The flowers are edible too, so you get a bonus harvest.
They sprawl nicely and don’t compete aggressively for nutrients.
Why These Yellow Squash Companions Work
The reason these plants work so well next to yellow squash is simple.
Some of them feed the soil, while others repel pests or bring in pollinators.
Yellow squash depends heavily on bees for pollination, so flowers like marigolds and nasturtiums pull double duty.
They beautify your garden and boost your squash yield at the same time.
And when you plant next to yellow squash with legumes, you’re basically giving your squash a slow-release fertilizer.
1. Pest Confusion
Many pests find their favorite plants by smell.
When you plant next to yellow squash with strong-scented herbs and flowers, you mask that scent.
This makes it harder for squash bugs and vine borers to find your crop.
2. Improved Pollination
Companion flowers attract bees and other pollinators to your garden.
More pollinators mean more yellow squash forming on the vine.
That’s a big deal because poor pollination leads to shriveled or misshapen fruit.
3. Better Use of Space
Knowing what to plant next to yellow squash also helps you garden smarter.
Fast crops like radishes finish before your squash needs the room.
Tall crops like corn grow upward while squash spreads along the ground.
What NOT to Plant Next to Yellow Squash
Just as important as what to plant next to yellow squash is what to avoid.
Some plants compete too hard or attract the same pests.
Here’s what to keep away from your yellow squash patch.
1. Other Squash Varieties
Don’t plant other squash, pumpkins, or melons right next to yellow squash.
They cross-pollinate, which can lead to weird-tasting fruit.
They also share the same pests and diseases, so problems spread fast.
2. Cucumbers
Cucumbers and yellow squash compete for the same nutrients and space.
They’re also both targets for cucumber beetles.
Keep them in separate beds if you can.
3. Potatoes
Potatoes are another plant to avoid near yellow squash.
They compete heavily for nutrients and can increase the risk of blight.
Give your yellow squash plenty of room away from the potato patch.
So, What to Plant Next to Yellow Squash?
What to plant next to yellow squash comes down to choosing companions that feed the soil, repel pests, and bring in pollinators.
Beans, corn, radishes, marigolds, and nasturtiums all fit the bill.
Meanwhile, keep other squash varieties, cucumbers, and potatoes at a distance.
Get these pairings right and your yellow squash will reward you with a bigger, healthier harvest.