Black-Eyed Susan vs Geranium

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

Black-Eyed Susan

Rudbeckia hirta

Asteraceae · flowers

Deer ResistantDrought TolerantLow Maintenance

Geranium

Pelargonium × hortorum

Geraniaceae · flowers

Deer ResistantDrought TolerantMedium Maintenance

Hardiness Zone Range

Black-Eyed Susan (Zones 3-9)

Geranium (Zones 9-11)

Overlap: Both grow in zones 9–9

Detailed Comparison

Feature	Black-Eyed Susan	Geranium
Scientific Name	Rudbeckia hirta	Pelargonium × hortorum
Family	Asteraceae	Geraniaceae
Category	flowers	flowers
Sun	☀️ Full Sun	☀️ Full Sun
Water	💧💧 Medium	💧💧 Medium
Soil	Well-drained	Well-drained
Height	3'	1' 6"
Spread	1' 6"	1' 6"
Bloom Season	Summer-Fall	Spring-Fall
Bloom Color	Yellow	Red, Pink, White, Salmon
Growth Rate	Fast	Fast
Native Region	Eastern North America	South Africa
Maintenance	Low	Medium

Special Traits

Black-Eyed Susan

No — EdibleYes — Deer ResistantYes — Drought Tolerant

Geranium

No — EdibleYes — Deer ResistantYes — 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.

Geranium

✓Deadhead spent flower stems at base.
✓Let soil dry slightly between waterings.
✓Feed every 2 weeks.
✓Overwinter indoors in cold climates.
✓Excellent in containers.

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 Geranium if you don't mind medium maintenance, need drought tolerance, and want deer resistance. It thrives in full sun with medium water in zones 9–11.

Plant them together? Both overlap in zones 9–9. They share similar sun requirements (full sun), making them potential garden companions.

View Black-Eyed SusanProfile →View GeraniumProfile →

Frequently Asked Questions

Can Black-Eyed Susan and Geranium grow in the same hardiness zone?

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

Do Black-Eyed Susan and Geranium have the same sun and water needs?

Black-Eyed Susan needs full sun and medium water, while Geranium needs full sun and medium water. They share similar growing requirements and can be planted in the same bed.

Which grows taller, Black-Eyed Susan or Geranium?

Black-Eyed Susan grows taller at 3' compared to Geranium at 1' 6". Black-Eyed Susan spreads 1' 6" while Geranium spreads 1' 6".

Are Black-Eyed Susan and Geranium deer resistant?

Yes, both Black-Eyed Susan and Geranium are considered deer resistant, making them excellent choices for gardens in areas with deer pressure.

Which is easier to maintain, Black-Eyed Susan or Geranium?

Black-Eyed Susan has low maintenance while Geranium has medium maintenance. Black-Eyed Susan may be easier for beginning gardeners to manage.

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Detailed Comparison

Feature	Black-Eyed Susan	Geranium
Scientific Name	Rudbeckia hirta	Pelargonium × hortorum
Family	Asteraceae	Geraniaceae
Category	flowers	flowers
Sun	☀️ Full Sun	☀️ Full Sun
Water	💧💧 Medium	💧💧 Medium
Soil	Well-drained	Well-drained
Height	3'	1' 6"
Spread	1' 6"	1' 6"
Bloom Season	Summer-Fall	Spring-Fall
Bloom Color	Yellow	Red, Pink, White, Salmon
Growth Rate	Fast	Fast
Native Region	Eastern North America	South Africa
Maintenance	Low	Medium

Care Tips

Black-Eyed Susan

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

Geranium

✓Deadhead spent flower stems at base.
✓Let soil dry slightly between waterings.
✓Feed every 2 weeks.
✓Overwinter indoors in cold climates.
✓Excellent in containers.

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 Geranium if you don't mind medium maintenance, need drought tolerance, and want deer resistance. It thrives in full sun with medium water in zones 9–11.

Plant them together? Both overlap in zones 9–9. They share similar sun requirements (full sun), making them potential garden companions.

Frequently Asked Questions

Can Black-Eyed Susan and Geranium grow in the same hardiness zone?

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

Do Black-Eyed Susan and Geranium have the same sun and water needs?

Black-Eyed Susan needs full sun and medium water, while Geranium needs full sun and medium water. They share similar growing requirements and can be planted in the same bed.

Which grows taller, Black-Eyed Susan or Geranium?

Black-Eyed Susan grows taller at 3' compared to Geranium at 1' 6". Black-Eyed Susan spreads 1' 6" while Geranium spreads 1' 6".

Are Black-Eyed Susan and Geranium deer resistant?

Yes, both Black-Eyed Susan and Geranium are considered deer resistant, making them excellent choices for gardens in areas with deer pressure.

Which is easier to maintain, Black-Eyed Susan or Geranium?

Black-Eyed Susan has low maintenance while Geranium has medium maintenance. Black-Eyed Susan may be easier for beginning gardeners to manage.