Black-Eyed Susan vs Cilantro/Coriander

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

Black-Eyed Susan

Rudbeckia hirta

Asteraceae · flowers

Deer ResistantDrought TolerantLow Maintenance

Cilantro/Coriander

Coriandrum sativum

Apiaceae · herbs

EdibleLow Maintenance

Hardiness Zone Range

Black-Eyed Susan (Zones 3-9)

Cilantro/Coriander (Zones 2-11)

Overlap: Both grow in zones 3–9

Detailed Comparison

Feature	Black-Eyed Susan	Cilantro/Coriander
Scientific Name	Rudbeckia hirta	Coriandrum sativum
Family	Asteraceae	Apiaceae
Category	flowers	herbs
Sun	☀️ Full Sun	☀️ Full Sun to Part Shade
Water	💧💧 Medium	💧💧 Medium
Soil	Well-drained	Well-drained
Height	3'	2'
Spread	1' 6"	8"
Bloom Season	Summer-Fall	Spring-Summer
Bloom Color	Yellow	White, Pink
Growth Rate	Fast	Fast
Native Region	Eastern North America	Mediterranean, Western Asia
Maintenance	Low	Low

Special Traits

Black-Eyed Susan

No — EdibleYes — Deer ResistantYes — Drought Tolerant

Cilantro/Coriander

Yes — EdibleNo — Deer ResistantNo — Drought Tolerant

Care Tips

Black-Eyed Susan

✓Deadhead spent blooms to encourage reblooming.
✓Divide clumps every 3-4 years.
✓Tolerates poor soil and drought once established.

Cilantro/Coriander

✓Succession sow every 2-3 weeks — bolts quickly in heat.
✓Prefers cool weather.
✓Let some plants flower for coriander seeds.
✓Self-seeds readily.
✓'Slow-bolt' varieties extend harvest.

Which Plant Is Right for Your Garden?

Choose Black-Eyed Susan if you want a low-maintenance plant, need drought tolerance, and want deer resistance. It thrives in full sun with medium water in zones 3–9.

Choose Cilantro/Coriander if you want a low-maintenance plant. It thrives in full sun to part shade with medium water in zones 2–11.

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

View Black-Eyed SusanProfile →View Cilantro/CorianderProfile →

Frequently Asked Questions

Can Black-Eyed Susan and Cilantro/Coriander grow in the same hardiness zone?

Black-Eyed Susan grows in USDA zones 3-9, while Cilantro/Coriander grows in zones 2-11. Both plants can grow together in zones 3 through 9.

Do Black-Eyed Susan and Cilantro/Coriander have the same sun and water needs?

Black-Eyed Susan needs full sun and medium water, while Cilantro/Coriander needs full sun to part shade and medium water. Their differing requirements mean you may need separate garden areas for each.

Which grows taller, Black-Eyed Susan or Cilantro/Coriander?

Black-Eyed Susan grows taller at 3' compared to Cilantro/Coriander at 2'. Black-Eyed Susan spreads 1' 6" while Cilantro/Coriander spreads 8".

Are Black-Eyed Susan and Cilantro/Coriander deer resistant?

Black-Eyed Susan is deer resistant, but Cilantro/Coriander is not. If deer are a concern, Black-Eyed Susan is the better choice, or protect Cilantro/Coriander with fencing.

Which is easier to maintain, Black-Eyed Susan or Cilantro/Coriander?

Both Black-Eyed Susan and Cilantro/Coriander 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	Black-Eyed Susan	Cilantro/Coriander
Scientific Name	Rudbeckia hirta	Coriandrum sativum
Family	Asteraceae	Apiaceae
Category	flowers	herbs
Sun	☀️ Full Sun	☀️ Full Sun to Part Shade
Water	💧💧 Medium	💧💧 Medium
Soil	Well-drained	Well-drained
Height	3'	2'
Spread	1' 6"	8"
Bloom Season	Summer-Fall	Spring-Summer
Bloom Color	Yellow	White, Pink
Growth Rate	Fast	Fast
Native Region	Eastern North America	Mediterranean, Western Asia
Maintenance	Low	Low

Care Tips

Black-Eyed Susan

✓Deadhead spent blooms to encourage reblooming.
✓Divide clumps every 3-4 years.
✓Tolerates poor soil and drought once established.

Cilantro/Coriander

✓Succession sow every 2-3 weeks — bolts quickly in heat.
✓Prefers cool weather.
✓Let some plants flower for coriander seeds.
✓Self-seeds readily.
✓'Slow-bolt' varieties extend harvest.

Which Plant Is Right for Your Garden?

Choose Black-Eyed Susan if you want a low-maintenance plant, need drought tolerance, and want deer resistance. It thrives in full sun with medium water in zones 3–9.

Choose Cilantro/Coriander if you want a low-maintenance plant. It thrives in full sun to part shade with medium water in zones 2–11.

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 Black-Eyed Susan and Cilantro/Coriander grow in the same hardiness zone?

Black-Eyed Susan grows in USDA zones 3-9, while Cilantro/Coriander grows in zones 2-11. Both plants can grow together in zones 3 through 9.

Do Black-Eyed Susan and Cilantro/Coriander have the same sun and water needs?

Which grows taller, Black-Eyed Susan or Cilantro/Coriander?

Black-Eyed Susan grows taller at 3' compared to Cilantro/Coriander at 2'. Black-Eyed Susan spreads 1' 6" while Cilantro/Coriander spreads 8".

Are Black-Eyed Susan and Cilantro/Coriander deer resistant?

Black-Eyed Susan is deer resistant, but Cilantro/Coriander is not. If deer are a concern, Black-Eyed Susan is the better choice, or protect Cilantro/Coriander with fencing.

Which is easier to maintain, Black-Eyed Susan or Cilantro/Coriander?

Both Black-Eyed Susan and Cilantro/Coriander have low maintenance requirements. They need a similar level of care including regular attention to watering, pruning, and soil health.