Canna Lily vs Sweet Potato

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

Canna Lily

Canna × generalis

Cannaceae · flowers

EdibleLow Maintenance

Sweet Potato

Ipomoea batatas

Convolvulaceae · vegetables

EdibleDrought TolerantLow Maintenance

Hardiness Zone Range

Canna Lily (Zones 7-11)

Sweet Potato (Zones 3-11)

Overlap: Both grow in zones 7–11

Detailed Comparison

Feature	Canna Lily	Sweet Potato
Scientific Name	Canna × generalis	Ipomoea batatas
Family	Cannaceae	Convolvulaceae
Category	flowers	vegetables
Sun	☀️ Full Sun	☀️ Full Sun
Water	💧💧 Medium to High	💧💧 Medium
Soil	Rich, Moist	Loose, Sandy
Height	6'	1'
Spread	2'	4'
Bloom Season	Summer-Fall	Late Summer-Fall
Bloom Color	Red, Orange, Yellow, Pink	Purple (occasional)
Growth Rate	Fast	Fast
Native Region	Tropical Americas	Central/South America
Maintenance	Low	Low

Special Traits

Canna Lily

Yes — EdibleNo — Deer ResistantNo — Drought Tolerant

Sweet Potato

Yes — EdibleNo — Deer ResistantYes — Drought Tolerant

Care Tips

Canna Lily

✓Dig rhizomes before frost in cold climates.
✓Full sun and rich soil for best performance.
✓Keep well watered.
✓Divide overcrowded clumps in spring.

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 Canna Lily if you want a low-maintenance plant. It thrives in full sun with medium to high water in zones 7–11.

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 7–11. They share similar sun requirements (full sun), making them potential garden companions.

View Canna LilyProfile →View Sweet PotatoProfile →

Frequently Asked Questions

Can Canna Lily and Sweet Potato grow in the same hardiness zone?

Canna Lily grows in USDA zones 7-11, while Sweet Potato grows in zones 3-11. Both plants can grow together in zones 7 through 11.

Do Canna Lily and Sweet Potato have the same sun and water needs?

Canna Lily needs full sun and medium to high water, while Sweet Potato needs full sun and medium water. Their differing requirements mean you may need separate garden areas for each.

Which grows taller, Canna Lily or Sweet Potato?

Canna Lily grows taller at 6' compared to Sweet Potato at 1'. Canna Lily spreads 2' while Sweet Potato spreads 4'.

Are Canna Lily and Sweet Potato deer resistant?

Neither Canna Lily nor Sweet Potato is considered deer resistant. In areas with deer, consider protective fencing or deer repellent for both plants.

Which is easier to maintain, Canna Lily or Sweet Potato?

Both Canna Lily 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	Canna Lily	Sweet Potato
Scientific Name	Canna × generalis	Ipomoea batatas
Family	Cannaceae	Convolvulaceae
Category	flowers	vegetables
Sun	☀️ Full Sun	☀️ Full Sun
Water	💧💧 Medium to High	💧💧 Medium
Soil	Rich, Moist	Loose, Sandy
Height	6'	1'
Spread	2'	4'
Bloom Season	Summer-Fall	Late Summer-Fall
Bloom Color	Red, Orange, Yellow, Pink	Purple (occasional)
Growth Rate	Fast	Fast
Native Region	Tropical Americas	Central/South America
Maintenance	Low	Low

Care Tips

Canna Lily

✓Dig rhizomes before frost in cold climates.
✓Full sun and rich soil for best performance.
✓Keep well watered.
✓Divide overcrowded clumps in spring.

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 Canna Lily if you want a low-maintenance plant. It thrives in full sun with medium to high water in zones 7–11.

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 7–11. They share similar sun requirements (full sun), making them potential garden companions.

Frequently Asked Questions

Can Canna Lily and Sweet Potato grow in the same hardiness zone?

Canna Lily grows in USDA zones 7-11, while Sweet Potato grows in zones 3-11. Both plants can grow together in zones 7 through 11.

Do Canna Lily and Sweet Potato have the same sun and water needs?

Canna Lily needs full sun and medium to high water, while Sweet Potato needs full sun and medium water. Their differing requirements mean you may need separate garden areas for each.

Which grows taller, Canna Lily or Sweet Potato?

Canna Lily grows taller at 6' compared to Sweet Potato at 1'. Canna Lily spreads 2' while Sweet Potato spreads 4'.

Are Canna Lily and Sweet Potato deer resistant?

Neither Canna Lily nor Sweet Potato is considered deer resistant. In areas with deer, consider protective fencing or deer repellent for both plants.

Which is easier to maintain, Canna Lily or Sweet Potato?

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