Cosmos vs Oriental Lily

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

Cosmos

Cosmos bipinnatus

Asteraceae · flowers

Deer ResistantDrought TolerantLow Maintenance

Oriental Lily

Lilium orientalis

Liliaceae · bulbs

Deer ResistantLow Maintenance

Hardiness Zone Range

Cosmos (Zones 2-11)

Oriental Lily (Zones 4-8)

Overlap: Both grow in zones 4–8

Detailed Comparison

Feature	Cosmos	Oriental Lily
Scientific Name	Cosmos bipinnatus	Lilium orientalis
Family	Asteraceae	Liliaceae
Category	flowers	bulbs
Sun	☀️ Full Sun	☀️ Full Sun to Part Shade
Water	💧 Low	💧💧 Medium
Soil	Well-drained, Poor	Rich, Acidic, Well-drained
Height	5'	4'
Spread	2'	1'
Bloom Season	Summer-Fall	Late Summer
Bloom Color	Pink, White, Red	White, Pink, Red
Growth Rate	Fast	Medium
Native Region	Mexico	Japan
Maintenance	Low	Low

Special Traits

Cosmos

No — EdibleYes — Deer ResistantYes — Drought Tolerant

Oriental Lily

No — EdibleYes — Deer ResistantNo — 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.

Oriental Lily

✓Plant 8 inches deep.
✓Need acidic soil — add sulfur if needed.
✓Excellent cut flowers.
✓Protect from lily leaf beetle.
✓Toxic to cats.

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 Oriental Lily if you want a low-maintenance plant, and want deer resistance. It thrives in full sun to part shade with medium water in zones 4–8.

Plant them together? Both overlap in zones 4–8. However, they have different sun needs, so plan your garden layout carefully.

View CosmosProfile →View Oriental LilyProfile →

Frequently Asked Questions

Can Cosmos and Oriental Lily grow in the same hardiness zone?

Cosmos grows in USDA zones 2-11, while Oriental Lily grows in zones 4-8. Both plants can grow together in zones 4 through 8.

Do Cosmos and Oriental Lily have the same sun and water needs?

Cosmos needs full sun and low water, while Oriental Lily needs full sun to part shade and medium water. Their differing requirements mean you may need separate garden areas for each.

Which grows taller, Cosmos or Oriental Lily?

Cosmos grows taller at 5' compared to Oriental Lily at 4'. Cosmos spreads 2' while Oriental Lily spreads 1'.

Are Cosmos and Oriental Lily deer resistant?

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

Which is easier to maintain, Cosmos or Oriental Lily?

Both Cosmos and Oriental Lily 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	Oriental Lily
Scientific Name	Cosmos bipinnatus	Lilium orientalis
Family	Asteraceae	Liliaceae
Category	flowers	bulbs
Sun	☀️ Full Sun	☀️ Full Sun to Part Shade
Water	💧 Low	💧💧 Medium
Soil	Well-drained, Poor	Rich, Acidic, Well-drained
Height	5'	4'
Spread	2'	1'
Bloom Season	Summer-Fall	Late Summer
Bloom Color	Pink, White, Red	White, Pink, Red
Growth Rate	Fast	Medium
Native Region	Mexico	Japan
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.

Oriental Lily

✓Plant 8 inches deep.
✓Need acidic soil — add sulfur if needed.
✓Excellent cut flowers.
✓Protect from lily leaf beetle.
✓Toxic to cats.

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 Oriental Lily if you want a low-maintenance plant, and want deer resistance. It thrives in full sun to part shade with medium water in zones 4–8.

Plant them together? Both overlap in zones 4–8. However, they have different sun needs, so plan your garden layout carefully.

Frequently Asked Questions

Can Cosmos and Oriental Lily grow in the same hardiness zone?

Cosmos grows in USDA zones 2-11, while Oriental Lily grows in zones 4-8. Both plants can grow together in zones 4 through 8.

Do Cosmos and Oriental Lily have the same sun and water needs?

Cosmos needs full sun and low water, while Oriental Lily needs full sun to part shade and medium water. Their differing requirements mean you may need separate garden areas for each.

Which grows taller, Cosmos or Oriental Lily?

Cosmos grows taller at 5' compared to Oriental Lily at 4'. Cosmos spreads 2' while Oriental Lily spreads 1'.

Are Cosmos and Oriental Lily deer resistant?

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

Which is easier to maintain, Cosmos or Oriental Lily?

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