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What to Plant With Yellow Squash
What to plant with yellow squash comes down to companion plants that support its growth, repel pests, and maximize your garden space.
The best companions for yellow squash are beans, corn, radishes, marigolds, and nasturtiums.
These plants either improve the soil, confuse pests, or attract beneficial insects that keep your yellow squash healthy.
In this post, we’ll explore what to plant with yellow squash, why these companions work, and which plants you should keep far away from your squash bed.
Let’s dig in.
Why Companion Planting Matters for Yellow Squash
Yellow squash is a heavy feeder that takes up a lot of garden space.
It’s also a magnet for pests like squash bugs, vine borers, and aphids.
Companion planting helps you work with nature instead of against it.
When you plant the right companions with yellow squash, you get better pollination, fewer pests, and healthier soil.
That means you can grow yellow squash without drowning your garden in chemicals.
Best Plants to Grow With Yellow Squash
These are the plants that truly shine when grown alongside yellow squash.
1. Beans and Peas
Beans and peas are legumes, which means they pull nitrogen from the air and fix it into the soil.
Yellow squash is a hungry plant that needs nitrogen to produce those big, vibrant fruits.
When you plant beans or peas near your yellow squash, they feed the soil naturally.
This combo is one of the oldest tricks in the companion planting playbook.
2. Corn
Corn and yellow squash are classic partners in the famous “Three Sisters” garden.
The corn grows tall and provides a bit of shade for the squash during the hottest part of the day.
In return, the yellow squash spreads its broad leaves across the ground, acting as a living mulch that keeps weeds down and soil moisture in.
Plant corn and yellow squash together and both plants benefit.
3. Radishes
Radishes are a quick-growing trap crop for flea beetles and other pests that love yellow squash.
While the bugs munch on the radishes, your yellow squash gets to grow in peace.
You can also plant radishes between your squash rows to mark the space while the yellow squash is still small.
By the time the squash vines spread out, the radishes are ready to harvest.
4. Marigolds
Marigolds are a must-have companion for yellow squash.
Their strong scent confuses pests like squash bugs and whiteflies.
They also attract beneficial insects, including ladybugs and hoverflies, that prey on the pests attacking your yellow squash.
Plant marigolds at the edges of your squash bed or tucked between plants for the best results.
5. Nasturtiums
Nasturtiums work as a trap crop for aphids and squash bugs.
These pests prefer nasturtiums over yellow squash, so they leave your squash alone.
As a bonus, nasturtiums are edible and add a peppery kick to salads.
Plant them near your yellow squash for a beautiful, functional pair.
6. Herbs Like Dill, Oregano, and Borage
Herbs are powerhouse companions for yellow squash.
Dill and oregano attract predatory wasps and hoverflies that eat squash pests.
Borage is especially useful because it repels squash bugs and improves flavor and growth in nearby plants.
Let a few herbs flower near your yellow squash to bring in pollinators too.
What NOT to Plant With Yellow Squash
Just as some plants help yellow squash thrive, others hold it back.
1. Potatoes
Potatoes and yellow squash compete for the same nutrients and space.
They also share susceptibility to blight and other soil-borne diseases.
Keep potatoes far from your yellow squash bed.
2. Cucumbers and Other Squash
Cucumbers, melons, and other squash varieties attract the same pests.
Planting them together creates a buffet for squash bugs and vine borers.
They can also cross-pollinate, which affects the flavor of your yellow squash.
3. Fennel
Fennel releases compounds that stunt the growth of many garden plants, including yellow squash.
It’s best to plant fennel in a pot far away from your vegetable beds.
4. Brassicas
Cabbage, broccoli, and cauliflower are heavy feeders that compete with yellow squash for nutrients.
They also attract different pests that can spread to your squash plants.
Give your yellow squash plenty of room away from brassicas.
Tips for Planting Companions With Yellow Squash
Getting the spacing right is key when you plant companions with yellow squash.
Yellow squash needs about 2 to 3 feet of space per plant, so don’t crowd it.
Plant taller companions like corn on the north side of your bed so they don’t shade the squash too much.
Low-growing companions like radishes and nasturtiums can go right around the base of your yellow squash.
And always rotate your crops each season to keep pests and diseases guessing.
So, What to Plant With Yellow Squash?
What to plant with yellow squash starts with beans, corn, radishes, marigolds, and nasturtiums.
These companions feed the soil, repel pests, and bring in pollinators that keep your yellow squash producing all season.
Avoid potatoes, fennel, brassicas, and other squash varieties that compete with or harm your crop.
With the right companions around your yellow squash, you’ll get a healthier plant, a bigger harvest, and a garden that practically takes care of itself.