Black-Eyed Susan vs Southern Magnolia

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

Black-Eyed Susan

Rudbeckia hirta

Asteraceae · flowers

Deer ResistantDrought TolerantLow Maintenance

Southern Magnolia

Magnolia grandiflora

Magnoliaceae · trees

Deer ResistantLow Maintenance

Hardiness Zone Range

Black-Eyed Susan (Zones 3-9)

Southern Magnolia (Zones 7-10)

Overlap: Both grow in zones 7–9

Detailed Comparison

Feature	Black-Eyed Susan	Southern Magnolia
Scientific Name	Rudbeckia hirta	Magnolia grandiflora
Family	Asteraceae	Magnoliaceae
Category	flowers	trees
Sun	☀️ Full Sun	☀️ Full Sun to Part Shade
Water	💧💧 Medium	💧💧 Medium
Soil	Well-drained	Rich, Well-drained, Acidic
Height	3'	80'
Spread	1' 6"	40'
Bloom Season	Summer-Fall	Late Spring-Summer
Bloom Color	Yellow	White
Growth Rate	Fast	Medium
Native Region	Eastern North America	Southeastern US
Maintenance	Low	Low

Special Traits

Black-Eyed Susan

No — EdibleYes — Deer ResistantYes — Drought Tolerant

Southern Magnolia

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.

Southern Magnolia

✓Protect from winter winds in northern range.
✓Give space for lower branches to sweep the ground.
✓Leaves are slow to decompose.
✓Large seed pods with red seeds.

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 Southern Magnolia if you want a low-maintenance plant, and want deer resistance. It thrives in full sun to part shade with medium water in zones 7–10.

Plant them together? Both overlap in zones 7–9. However, they have different sun needs, so plan your garden layout carefully.

View Black-Eyed SusanProfile →View Southern MagnoliaProfile →

Frequently Asked Questions

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

Black-Eyed Susan grows in USDA zones 3-9, while Southern Magnolia grows in zones 7-10. Both plants can grow together in zones 7 through 9.

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

Black-Eyed Susan needs full sun and medium water, while Southern Magnolia 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 Southern Magnolia?

Southern Magnolia grows taller at 80' compared to Black-Eyed Susan at 3'. Southern Magnolia spreads 40' while Black-Eyed Susan spreads 1' 6".

Are Black-Eyed Susan and Southern Magnolia deer resistant?

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

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

Both Black-Eyed Susan and Southern Magnolia 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	Southern Magnolia
Scientific Name	Rudbeckia hirta	Magnolia grandiflora
Family	Asteraceae	Magnoliaceae
Category	flowers	trees
Sun	☀️ Full Sun	☀️ Full Sun to Part Shade
Water	💧💧 Medium	💧💧 Medium
Soil	Well-drained	Rich, Well-drained, Acidic
Height	3'	80'
Spread	1' 6"	40'
Bloom Season	Summer-Fall	Late Spring-Summer
Bloom Color	Yellow	White
Growth Rate	Fast	Medium
Native Region	Eastern North America	Southeastern US
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.

Southern Magnolia

✓Protect from winter winds in northern range.
✓Give space for lower branches to sweep the ground.
✓Leaves are slow to decompose.
✓Large seed pods with red seeds.

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 Southern Magnolia if you want a low-maintenance plant, and want deer resistance. It thrives in full sun to part shade with medium water in zones 7–10.

Plant them together? Both overlap in zones 7–9. However, they have different sun needs, so plan your garden layout carefully.

Frequently Asked Questions

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

Black-Eyed Susan grows in USDA zones 3-9, while Southern Magnolia grows in zones 7-10. Both plants can grow together in zones 7 through 9.

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

Black-Eyed Susan needs full sun and medium water, while Southern Magnolia 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 Southern Magnolia?

Southern Magnolia grows taller at 80' compared to Black-Eyed Susan at 3'. Southern Magnolia spreads 40' while Black-Eyed Susan spreads 1' 6".

Are Black-Eyed Susan and Southern Magnolia deer resistant?

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

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

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