Cosmos vs Marigold

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

Cosmos

Cosmos bipinnatus

Asteraceae · flowers

Deer ResistantDrought TolerantLow Maintenance

Marigold

Tagetes spp.

Asteraceae · flowers

Deer ResistantDrought TolerantLow Maintenance

Hardiness Zone Range

Cosmos (Zones 2-11)

Marigold (Zones 2-11)

Overlap: Both grow in zones 2–11

Detailed Comparison

Feature	Cosmos	Marigold
Scientific Name	Cosmos bipinnatus	Tagetes spp.
Family	Asteraceae	Asteraceae
Category	flowers	flowers
Sun	☀️ Full Sun	☀️ Full Sun
Water	💧 Low	💧💧 Medium
Soil	Well-drained, Poor	Well-drained
Height	5'	2'
Spread	2'	1'
Bloom Season	Summer-Fall	Summer-Fall
Bloom Color	Pink, White, Red	Yellow, Orange, Red
Growth Rate	Fast	Fast
Native Region	Mexico	Americas
Maintenance	Low	Low

Special Traits

Cosmos

No — EdibleYes — Deer ResistantYes — Drought Tolerant

Marigold

No — EdibleYes — Deer ResistantYes — Drought Tolerant

Care Tips

Cosmos

✓Direct sow after frost.
✓Don't fertilize — rich soil produces leaves not flowers.
✓Deadhead or let self-seed.
✓Tall varieties may need staking in wind.

Marigold

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

Which Plant Is Right for Your Garden?

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

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.

Plant them together? Both overlap in zones 2–11. They share similar sun requirements (full sun), making them potential garden companions.

View CosmosProfile →View MarigoldProfile →

Frequently Asked Questions

Can Cosmos and Marigold grow in the same hardiness zone?

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

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

Cosmos needs full sun and low water, while Marigold needs full sun and medium water. Their differing requirements mean you may need separate garden areas for each.

Which grows taller, Cosmos or Marigold?

Cosmos grows taller at 5' compared to Marigold at 2'. Cosmos spreads 2' while Marigold spreads 1'.

Are Cosmos and Marigold deer resistant?

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

Which is easier to maintain, Cosmos or Marigold?

Both Cosmos and Marigold 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	Cosmos	Marigold
Scientific Name	Cosmos bipinnatus	Tagetes spp.
Family	Asteraceae	Asteraceae
Category	flowers	flowers
Sun	☀️ Full Sun	☀️ Full Sun
Water	💧 Low	💧💧 Medium
Soil	Well-drained, Poor	Well-drained
Height	5'	2'
Spread	2'	1'
Bloom Season	Summer-Fall	Summer-Fall
Bloom Color	Pink, White, Red	Yellow, Orange, Red
Growth Rate	Fast	Fast
Native Region	Mexico	Americas
Maintenance	Low	Low

Care Tips

Cosmos

✓Direct sow after frost.
✓Don't fertilize — rich soil produces leaves not flowers.
✓Deadhead or let self-seed.
✓Tall varieties may need staking in wind.

Marigold

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

Which Plant Is Right for Your Garden?

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

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.

Plant them together? Both overlap in zones 2–11. They share similar sun requirements (full sun), making them potential garden companions.

Frequently Asked Questions

Can Cosmos and Marigold grow in the same hardiness zone?

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

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

Cosmos needs full sun and low water, while Marigold needs full sun and medium water. Their differing requirements mean you may need separate garden areas for each.

Which grows taller, Cosmos or Marigold?

Cosmos grows taller at 5' compared to Marigold at 2'. Cosmos spreads 2' while Marigold spreads 1'.

Are Cosmos and Marigold deer resistant?

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

Which is easier to maintain, Cosmos or Marigold?

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