Agave vs Black-Eyed Susan

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

Agave

Agave americana

Asparagaceae · succulents

Deer ResistantDrought TolerantLow Maintenance

Black-Eyed Susan

Rudbeckia hirta

Asteraceae · flowers

Deer ResistantDrought TolerantLow Maintenance

Hardiness Zone Range

Agave (Zones 8-11)

Black-Eyed Susan (Zones 3-9)

Overlap: Both grow in zones 8–9

Detailed Comparison

Feature	Agave	Black-Eyed Susan
Scientific Name	Agave americana	Rudbeckia hirta
Family	Asparagaceae	Asteraceae
Category	succulents	flowers
Sun	☀️ Full Sun	☀️ Full Sun
Water	💧 Low	💧💧 Medium
Soil	Sandy, Well-drained	Well-drained
Height	6'	3'
Spread	8'	1' 6"
Bloom Season	Once (then dies)	Summer-Fall
Bloom Color	Yellow	Yellow
Growth Rate	Slow	Fast
Native Region	Mexico, Southwestern US	Eastern North America
Maintenance	Low	Low

Special Traits

Agave

No — EdibleYes — Deer ResistantYes — Drought Tolerant

Black-Eyed Susan

No — EdibleYes — Deer ResistantYes — Drought Tolerant

Care Tips

Agave

✓Give ample space — plants can reach 6-8 feet wide.
✓Sharp terminal spines are dangerous — clip if near walkways.
✓Virtually indestructible once established.

Black-Eyed Susan

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

Which Plant Is Right for Your Garden?

Choose Agave if you want a low-maintenance plant, need drought tolerance, and want deer resistance. It thrives in full sun with low water in zones 8–11.

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.

Plant them together? Both overlap in zones 8–9. They share similar sun requirements (full sun), making them potential garden companions.

View AgaveProfile →View Black-Eyed SusanProfile →

Frequently Asked Questions

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

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

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

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

Which grows taller, Agave or Black-Eyed Susan?

Agave grows taller at 6' compared to Black-Eyed Susan at 3'. Agave spreads 8' while Black-Eyed Susan spreads 1' 6".

Are Agave and Black-Eyed Susan deer resistant?

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

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

Both Agave and Black-Eyed Susan 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	Agave	Black-Eyed Susan
Scientific Name	Agave americana	Rudbeckia hirta
Family	Asparagaceae	Asteraceae
Category	succulents	flowers
Sun	☀️ Full Sun	☀️ Full Sun
Water	💧 Low	💧💧 Medium
Soil	Sandy, Well-drained	Well-drained
Height	6'	3'
Spread	8'	1' 6"
Bloom Season	Once (then dies)	Summer-Fall
Bloom Color	Yellow	Yellow
Growth Rate	Slow	Fast
Native Region	Mexico, Southwestern US	Eastern North America
Maintenance	Low	Low

Care Tips

Agave

✓Give ample space — plants can reach 6-8 feet wide.
✓Sharp terminal spines are dangerous — clip if near walkways.
✓Virtually indestructible once established.

Black-Eyed Susan

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

Which Plant Is Right for Your Garden?

Choose Agave if you want a low-maintenance plant, need drought tolerance, and want deer resistance. It thrives in full sun with low water in zones 8–11.

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.

Plant them together? Both overlap in zones 8–9. They share similar sun requirements (full sun), making them potential garden companions.

Frequently Asked Questions

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

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

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

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

Which grows taller, Agave or Black-Eyed Susan?

Agave grows taller at 6' compared to Black-Eyed Susan at 3'. Agave spreads 8' while Black-Eyed Susan spreads 1' 6".

Are Agave and Black-Eyed Susan deer resistant?

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

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

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