Onion vs Squash

Side-by-side plant comparison — which is right for your garden?

Onion

Allium cepa

Amaryllidaceae · vegetables

EdibleDeer ResistantLow Maintenance

Squash

Cucurbita maxima

Cucurbitaceae · vegetables

EdibleLow Maintenance

Hardiness Zone Range

Onion (Zones 3-9)

Squash (Zones 2-11)

Overlap: Both grow in zones 3–9

Detailed Comparison

Feature	Onion	Squash
Scientific Name	Allium cepa	Cucurbita maxima
Family	Amaryllidaceae	Cucurbitaceae
Category	vegetables	vegetables
Sun	☀️ Full Sun	☀️ Full Sun
Water	💧💧 Medium	💧💧 Medium
Soil	Rich, Well-drained	Rich, Well-drained
Height	1' 6"	2'
Spread	4"	8'
Bloom Season	Summer	Summer-Fall
Bloom Color	White	Yellow, Orange
Growth Rate	Medium	Fast
Native Region	Central Asia	Americas
Maintenance	Low	Low

Special Traits

Onion

Yes — EdibleYes — Deer ResistantNo — Drought Tolerant

Squash

Yes — EdibleNo — Deer ResistantNo — Drought Tolerant

Care Tips

Onion

✓Match variety to your latitude — long-day for north, short-day for south.
✓Plant sets or transplants for easiest results.
✓Stop watering when tops fall over.
✓Cure for 2 weeks before storing.

Squash

✓Plant in hills after last frost.
✓Give ample space — vines spread 10+ feet.
✓Harvest when skin is hard and stem is dry.
✓Cure in sun for 10 days for better storage.

Which Plant Is Right for Your Garden?

Choose Onion if you want a low-maintenance plant, and want deer resistance. It thrives in full sun with medium water in zones 3–9.

Choose Squash if you want a low-maintenance plant. It thrives in full sun with medium water in zones 2–11.

Plant them together? Both overlap in zones 3–9. They share similar sun requirements (full sun), making them potential garden companions.

View OnionProfile →View SquashProfile →

Frequently Asked Questions

Can Onion and Squash grow in the same hardiness zone?

Onion grows in USDA zones 3-9, while Squash grows in zones 2-11. Both plants can grow together in zones 3 through 9.

Do Onion and Squash have the same sun and water needs?

Onion needs full sun and medium water, while Squash needs full sun and medium water. They share similar growing requirements and can be planted in the same bed.

Which grows taller, Onion or Squash?

Squash grows taller at 2' compared to Onion at 1' 6". Squash spreads 8' while Onion spreads 4".

Are Onion and Squash deer resistant?

Onion is deer resistant, but Squash is not. If deer are a concern, Onion is the better choice, or protect Squash with fencing.

Which is easier to maintain, Onion or Squash?

Both Onion and Squash have low maintenance requirements. They need a similar level of care including regular attention to watering, pruning, and soil health.

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Detailed Comparison

Feature	Onion	Squash
Scientific Name	Allium cepa	Cucurbita maxima
Family	Amaryllidaceae	Cucurbitaceae
Category	vegetables	vegetables
Sun	☀️ Full Sun	☀️ Full Sun
Water	💧💧 Medium	💧💧 Medium
Soil	Rich, Well-drained	Rich, Well-drained
Height	1' 6"	2'
Spread	4"	8'
Bloom Season	Summer	Summer-Fall
Bloom Color	White	Yellow, Orange
Growth Rate	Medium	Fast
Native Region	Central Asia	Americas
Maintenance	Low	Low

Care Tips

Onion

✓Match variety to your latitude — long-day for north, short-day for south.
✓Plant sets or transplants for easiest results.
✓Stop watering when tops fall over.
✓Cure for 2 weeks before storing.

Squash

✓Plant in hills after last frost.
✓Give ample space — vines spread 10+ feet.
✓Harvest when skin is hard and stem is dry.
✓Cure in sun for 10 days for better storage.

Which Plant Is Right for Your Garden?

Choose Onion if you want a low-maintenance plant, and want deer resistance. It thrives in full sun with medium water in zones 3–9.

Choose Squash if you want a low-maintenance plant. It thrives in full sun with medium water in zones 2–11.

Plant them together? Both overlap in zones 3–9. They share similar sun requirements (full sun), making them potential garden companions.

Frequently Asked Questions

Can Onion and Squash grow in the same hardiness zone?

Onion grows in USDA zones 3-9, while Squash grows in zones 2-11. Both plants can grow together in zones 3 through 9.

Do Onion and Squash have the same sun and water needs?

Onion needs full sun and medium water, while Squash needs full sun and medium water. They share similar growing requirements and can be planted in the same bed.

Which grows taller, Onion or Squash?

Squash grows taller at 2' compared to Onion at 1' 6". Squash spreads 8' while Onion spreads 4".

Are Onion and Squash deer resistant?

Onion is deer resistant, but Squash is not. If deer are a concern, Onion is the better choice, or protect Squash with fencing.

Which is easier to maintain, Onion or Squash?

Both Onion and Squash have low maintenance requirements. They need a similar level of care including regular attention to watering, pruning, and soil health.