Mint vs Onion

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

Mint

Mentha × piperita

Lamiaceae · herbs

EdibleDeer ResistantLow Maintenance

Onion

Allium cepa

Amaryllidaceae · vegetables

EdibleDeer ResistantLow Maintenance

Hardiness Zone Range

Mint (Zones 3-9)

Onion (Zones 3-9)

Overlap: Both grow in zones 3–9

Detailed Comparison

Feature	Mint	Onion
Scientific Name	Mentha × piperita	Allium cepa
Family	Lamiaceae	Amaryllidaceae
Category	herbs	vegetables
Sun	⛅ Part Shade	☀️ Full Sun
Water	💧💧 Medium	💧💧 Medium
Soil	Rich, Moist	Rich, Well-drained
Height	1' 6"	1' 6"
Spread	3'	4"
Bloom Season	Summer	Summer
Bloom Color	Purple	White
Growth Rate	Fast	Medium
Native Region	Europe	Central Asia
Maintenance	Low	Low

Special Traits

Mint

Yes — EdibleYes — Deer ResistantNo — Drought Tolerant

Onion

Yes — EdibleYes — Deer ResistantNo — Drought Tolerant

Care Tips

Mint

✓ALWAYS grow in containers or with buried barriers — mint is extremely invasive.
✓Harvest frequently to keep bushy.
✓Thrives in moist shade.
✓Many varieties: chocolate, apple, pineapple.

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.

Which Plant Is Right for Your Garden?

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

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.

Plant them together? Both overlap in zones 3–9. However, they have different sun needs, so plan your garden layout carefully.

View MintProfile →View OnionProfile →

Frequently Asked Questions

Can Mint and Onion grow in the same hardiness zone?

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

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

Mint needs part shade and medium water, while Onion needs full sun and medium water. Their differing requirements mean you may need separate garden areas for each.

Which grows taller, Mint or Onion?

Both Mint and Onion reach approximately 1' 6" in height, with spreads of 3' and 4" respectively.

Are Mint and Onion deer resistant?

Yes, both Mint and Onion are considered deer resistant, making them excellent choices for gardens in areas with deer pressure.

Which is easier to maintain, Mint or Onion?

Both Mint and Onion 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	Mint	Onion
Scientific Name	Mentha × piperita	Allium cepa
Family	Lamiaceae	Amaryllidaceae
Category	herbs	vegetables
Sun	⛅ Part Shade	☀️ Full Sun
Water	💧💧 Medium	💧💧 Medium
Soil	Rich, Moist	Rich, Well-drained
Height	1' 6"	1' 6"
Spread	3'	4"
Bloom Season	Summer	Summer
Bloom Color	Purple	White
Growth Rate	Fast	Medium
Native Region	Europe	Central Asia
Maintenance	Low	Low

Care Tips

Mint

✓ALWAYS grow in containers or with buried barriers — mint is extremely invasive.
✓Harvest frequently to keep bushy.
✓Thrives in moist shade.
✓Many varieties: chocolate, apple, pineapple.

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.

Which Plant Is Right for Your Garden?

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

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.

Plant them together? Both overlap in zones 3–9. However, they have different sun needs, so plan your garden layout carefully.

Frequently Asked Questions

Can Mint and Onion grow in the same hardiness zone?

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

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

Mint needs part shade and medium water, while Onion needs full sun and medium water. Their differing requirements mean you may need separate garden areas for each.

Which grows taller, Mint or Onion?

Both Mint and Onion reach approximately 1' 6" in height, with spreads of 3' and 4" respectively.

Are Mint and Onion deer resistant?

Yes, both Mint and Onion are considered deer resistant, making them excellent choices for gardens in areas with deer pressure.

Which is easier to maintain, Mint or Onion?

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