Black-Eyed Susan vs Morning Glory

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

Black-Eyed Susan

Rudbeckia hirta

Asteraceae · flowers

Deer ResistantDrought TolerantLow Maintenance

Morning Glory

Ipomoea tricolor

Convolvulaceae · vines

Deer ResistantDrought TolerantLow Maintenance

Hardiness Zone Range

Black-Eyed Susan (Zones 3-9)

Morning Glory (Zones 2-11)

Overlap: Both grow in zones 3–9

Detailed Comparison

Feature	Black-Eyed Susan	Morning Glory
Scientific Name	Rudbeckia hirta	Ipomoea tricolor
Family	Asteraceae	Convolvulaceae
Category	flowers	vines
Sun	☀️ Full Sun	☀️ Full Sun
Water	💧💧 Medium	💧💧 Medium
Soil	Well-drained	Well-drained
Height	3'	10'
Spread	1' 6"	2'
Bloom Season	Summer-Fall	Summer-Fall
Bloom Color	Yellow	Blue, Purple, Pink, White
Growth Rate	Fast	Fast
Native Region	Eastern North America	Central America
Maintenance	Low	Low

Special Traits

Black-Eyed Susan

No — EdibleYes — Deer ResistantYes — Drought Tolerant

Morning Glory

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.

Morning Glory

✓Nick or soak seeds overnight for faster germination.
✓Provide sturdy support.
✓Self-seeds prolifically — can become invasive.
✓Full sun is essential for abundant blooms.

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 Morning Glory if you want a low-maintenance plant, need drought tolerance, and want deer resistance. It thrives in full sun with medium water in zones 2–11.

Plant them together? Both overlap in zones 3–9. They share similar sun requirements (full sun), making them potential garden companions.

View Black-Eyed SusanProfile →View Morning GloryProfile →

Frequently Asked Questions

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

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

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

Black-Eyed Susan needs full sun and medium water, while Morning Glory 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 Morning Glory?

Morning Glory grows taller at 10' compared to Black-Eyed Susan at 3'. Morning Glory spreads 2' while Black-Eyed Susan spreads 1' 6".

Are Black-Eyed Susan and Morning Glory deer resistant?

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

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

Both Black-Eyed Susan and Morning Glory 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	Morning Glory
Scientific Name	Rudbeckia hirta	Ipomoea tricolor
Family	Asteraceae	Convolvulaceae
Category	flowers	vines
Sun	☀️ Full Sun	☀️ Full Sun
Water	💧💧 Medium	💧💧 Medium
Soil	Well-drained	Well-drained
Height	3'	10'
Spread	1' 6"	2'
Bloom Season	Summer-Fall	Summer-Fall
Bloom Color	Yellow	Blue, Purple, Pink, White
Growth Rate	Fast	Fast
Native Region	Eastern North America	Central America
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.

Morning Glory

✓Nick or soak seeds overnight for faster germination.
✓Provide sturdy support.
✓Self-seeds prolifically — can become invasive.
✓Full sun is essential for abundant blooms.

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 Morning Glory if you want a low-maintenance plant, need drought tolerance, and want deer resistance. It thrives in full sun with medium water in zones 2–11.

Plant them together? Both overlap in zones 3–9. They share similar sun requirements (full sun), making them potential garden companions.

Frequently Asked Questions

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

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

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

Black-Eyed Susan needs full sun and medium water, while Morning Glory 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 Morning Glory?

Morning Glory grows taller at 10' compared to Black-Eyed Susan at 3'. Morning Glory spreads 2' while Black-Eyed Susan spreads 1' 6".

Are Black-Eyed Susan and Morning Glory deer resistant?

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

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

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