Black-Eyed Susan vs Sweet Potato

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

Black-Eyed Susan

Rudbeckia hirta

Asteraceae · flowers

Deer ResistantDrought TolerantLow Maintenance

Sweet Potato

Ipomoea batatas

Convolvulaceae · vegetables

EdibleDrought TolerantLow Maintenance

Hardiness Zone Range

Black-Eyed Susan (Zones 3-9)

Sweet Potato (Zones 3-11)

Overlap: Both grow in zones 3–9

Detailed Comparison

Feature	Black-Eyed Susan	Sweet Potato
Scientific Name	Rudbeckia hirta	Ipomoea batatas
Family	Asteraceae	Convolvulaceae
Category	flowers	vegetables
Sun	☀️ Full Sun	☀️ Full Sun
Water	💧💧 Medium	💧💧 Medium
Soil	Well-drained	Loose, Sandy
Height	3'	1'
Spread	1' 6"	4'
Bloom Season	Summer-Fall	Late Summer-Fall
Bloom Color	Yellow	Purple (occasional)
Growth Rate	Fast	Fast
Native Region	Eastern North America	Central/South America
Maintenance	Low	Low

Special Traits

Black-Eyed Susan

No — EdibleYes — Deer ResistantYes — Drought Tolerant

Sweet Potato

Yes — EdibleNo — 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.

Sweet Potato

✓Plant slips (rooted sprouts) after soil warms.
✓Needs loose soil and warm temperatures.
✓Cure harvested tubers at 80°F for 10 days.
✓Don't refrigerate.

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 Sweet Potato if you want a low-maintenance plant, need drought tolerance. It thrives in full sun with medium water in zones 3–11.

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 Sweet PotatoProfile →

Frequently Asked Questions

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

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

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

Black-Eyed Susan needs full sun and medium water, while Sweet Potato 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 Sweet Potato?

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

Are Black-Eyed Susan and Sweet Potato deer resistant?

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

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

Both Black-Eyed Susan and Sweet Potato 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	Sweet Potato
Scientific Name	Rudbeckia hirta	Ipomoea batatas
Family	Asteraceae	Convolvulaceae
Category	flowers	vegetables
Sun	☀️ Full Sun	☀️ Full Sun
Water	💧💧 Medium	💧💧 Medium
Soil	Well-drained	Loose, Sandy
Height	3'	1'
Spread	1' 6"	4'
Bloom Season	Summer-Fall	Late Summer-Fall
Bloom Color	Yellow	Purple (occasional)
Growth Rate	Fast	Fast
Native Region	Eastern North America	Central/South 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.

Sweet Potato

✓Plant slips (rooted sprouts) after soil warms.
✓Needs loose soil and warm temperatures.
✓Cure harvested tubers at 80°F for 10 days.
✓Don't refrigerate.

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 Sweet Potato if you want a low-maintenance plant, need drought tolerance. It thrives in full sun with medium water in zones 3–11.

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 Sweet Potato grow in the same hardiness zone?

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

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

Black-Eyed Susan needs full sun and medium water, while Sweet Potato 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 Sweet Potato?

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

Are Black-Eyed Susan and Sweet Potato deer resistant?

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

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

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