Marigold vs Onion

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

Marigold

Tagetes spp.

Asteraceae · flowers

Deer ResistantDrought TolerantLow Maintenance

Onion

Allium cepa

Amaryllidaceae · vegetables

EdibleDeer ResistantLow Maintenance

Hardiness Zone Range

Marigold (Zones 2-11)

Onion (Zones 3-9)

Overlap: Both grow in zones 3–9

Detailed Comparison

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

Special Traits

Marigold

No — EdibleYes — Deer ResistantYes — Drought Tolerant

Onion

Yes — EdibleYes — Deer ResistantNo — Drought Tolerant

Care Tips

Marigold

✓Deadhead regularly for continuous bloom.
✓Roots exude substances that repel nematodes — excellent companion plant for vegetables.
✓Direct sow or transplant.

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 Marigold if you want a low-maintenance plant, need drought tolerance, and want deer resistance. It thrives in full sun with medium water in zones 2–11.

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. They share similar sun requirements (full sun), making them potential garden companions.

View MarigoldProfile →View OnionProfile →

Frequently Asked Questions

Can Marigold and Onion grow in the same hardiness zone?

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

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

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

Which grows taller, Marigold or Onion?

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

Are Marigold and Onion deer resistant?

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

Which is easier to maintain, Marigold or Onion?

Both Marigold 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	Marigold	Onion
Scientific Name	Tagetes spp.	Allium cepa
Family	Asteraceae	Amaryllidaceae
Category	flowers	vegetables
Sun	☀️ Full Sun	☀️ Full Sun
Water	💧💧 Medium	💧💧 Medium
Soil	Well-drained	Rich, Well-drained
Height	2'	1' 6"
Spread	1'	4"
Bloom Season	Summer-Fall	Summer
Bloom Color	Yellow, Orange, Red	White
Growth Rate	Fast	Medium
Native Region	Americas	Central Asia
Maintenance	Low	Low

Care Tips

Marigold

✓Deadhead regularly for continuous bloom.
✓Roots exude substances that repel nematodes — excellent companion plant for vegetables.
✓Direct sow or transplant.

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 Marigold if you want a low-maintenance plant, need drought tolerance, and want deer resistance. It thrives in full sun with medium water in zones 2–11.

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. They share similar sun requirements (full sun), making them potential garden companions.

Frequently Asked Questions

Can Marigold and Onion grow in the same hardiness zone?

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

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

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

Which grows taller, Marigold or Onion?

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

Are Marigold and Onion deer resistant?

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

Which is easier to maintain, Marigold or Onion?

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