Black-Eyed Susan vs Gardenia

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

Black-Eyed Susan

Rudbeckia hirta

Asteraceae · flowers

Deer ResistantDrought TolerantLow Maintenance

Gardenia

Gardenia jasminoides

Rubiaceae · shrubs

Deer ResistantHigh Maintenance

Hardiness Zone Range

Black-Eyed Susan (Zones 3-9)

Gardenia (Zones 8-11)

Overlap: Both grow in zones 8–9

Detailed Comparison

Feature	Black-Eyed Susan	Gardenia
Scientific Name	Rudbeckia hirta	Gardenia jasminoides
Family	Asteraceae	Rubiaceae
Category	flowers	shrubs
Sun	☀️ Full Sun	⛅ Part Shade
Water	💧💧 Medium	💧💧 Medium
Soil	Well-drained	Rich, Acidic, Moist
Height	3'	6'
Spread	1' 6"	4'
Bloom Season	Summer-Fall	Late Spring-Summer
Bloom Color	Yellow	White
Growth Rate	Fast	Medium
Native Region	Eastern North America	East Asia
Maintenance	Low	High

Special Traits

Black-Eyed Susan

No — EdibleYes — Deer ResistantYes — Drought Tolerant

Gardenia

No — EdibleYes — 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.

Gardenia

✓Needs acidic soil, consistent moisture, and humidity.
✓Feed with acid-loving plant fertilizer.
✓Yellowing leaves = iron deficiency (add chelated iron).
✓Don't move once established.

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 Gardenia if you don't mind high maintenance, and want deer resistance. It thrives in part shade with medium water in zones 8–11.

Plant them together? Both overlap in zones 8–9. However, they have different sun needs, so plan your garden layout carefully.

View Black-Eyed SusanProfile →View GardeniaProfile →

Frequently Asked Questions

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

Black-Eyed Susan grows in USDA zones 3-9, while Gardenia grows in zones 8-11. Both plants can grow together in zones 8 through 9.

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

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

Which grows taller, Black-Eyed Susan or Gardenia?

Gardenia grows taller at 6' compared to Black-Eyed Susan at 3'. Gardenia spreads 4' while Black-Eyed Susan spreads 1' 6".

Are Black-Eyed Susan and Gardenia deer resistant?

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

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

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

Explore More Data Tools

For adjacent public-data tools, methodology notes, and network updates, visit DataPeek Facts.

Detailed Comparison

Feature	Black-Eyed Susan	Gardenia
Scientific Name	Rudbeckia hirta	Gardenia jasminoides
Family	Asteraceae	Rubiaceae
Category	flowers	shrubs
Sun	☀️ Full Sun	⛅ Part Shade
Water	💧💧 Medium	💧💧 Medium
Soil	Well-drained	Rich, Acidic, Moist
Height	3'	6'
Spread	1' 6"	4'
Bloom Season	Summer-Fall	Late Spring-Summer
Bloom Color	Yellow	White
Growth Rate	Fast	Medium
Native Region	Eastern North America	East Asia
Maintenance	Low	High

Care Tips

Black-Eyed Susan

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

Gardenia

✓Needs acidic soil, consistent moisture, and humidity.
✓Feed with acid-loving plant fertilizer.
✓Yellowing leaves = iron deficiency (add chelated iron).
✓Don't move once established.

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 Gardenia if you don't mind high maintenance, and want deer resistance. It thrives in part shade with medium water in zones 8–11.

Plant them together? Both overlap in zones 8–9. However, they have different sun needs, so plan your garden layout carefully.

Frequently Asked Questions

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

Black-Eyed Susan grows in USDA zones 3-9, while Gardenia grows in zones 8-11. Both plants can grow together in zones 8 through 9.

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

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

Which grows taller, Black-Eyed Susan or Gardenia?

Gardenia grows taller at 6' compared to Black-Eyed Susan at 3'. Gardenia spreads 4' while Black-Eyed Susan spreads 1' 6".

Are Black-Eyed Susan and Gardenia deer resistant?

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

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

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