Asparagus vs Black-Eyed Susan

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

Asparagus

Asparagus officinalis

Asparagaceae · vegetables

EdibleDeer ResistantLow Maintenance

Black-Eyed Susan

Rudbeckia hirta

Asteraceae · flowers

Deer ResistantDrought TolerantLow Maintenance

Hardiness Zone Range

Asparagus (Zones 3-8)

Black-Eyed Susan (Zones 3-9)

Overlap: Both grow in zones 3–8

Detailed Comparison

Feature	Asparagus	Black-Eyed Susan
Scientific Name	Asparagus officinalis	Rudbeckia hirta
Family	Asparagaceae	Asteraceae
Category	vegetables	flowers
Sun	☀️ Full Sun	☀️ Full Sun
Water	💧💧 Medium	💧💧 Medium
Soil	Rich, Well-drained, Sandy	Well-drained
Height	5'	3'
Spread	1' 6"	1' 6"
Bloom Season	Spring	Summer-Fall
Bloom Color	Yellow-green	Yellow
Growth Rate	Medium	Fast
Native Region	Europe, Western Asia	Eastern North America
Maintenance	Low	Low

Special Traits

Asparagus

Yes — EdibleYes — Deer ResistantNo — Drought Tolerant

Black-Eyed Susan

No — EdibleYes — Deer ResistantYes — Drought Tolerant

Care Tips

Asparagus

✓Plant crowns in trenches 12 inches deep.
✓Don't harvest for first 2 years — let ferns grow to strengthen roots.
✓Harvest for 6-8 weeks in established beds.
✓Cut all spears regardless of size.

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 Asparagus if you want a low-maintenance plant, and want deer resistance. It thrives in full sun with medium water in zones 3–8.

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 3–8. They share similar sun requirements (full sun), making them potential garden companions.

View AsparagusProfile →View Black-Eyed SusanProfile →

Frequently Asked Questions

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

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

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

Asparagus needs full sun and medium water, while Black-Eyed Susan needs full sun and medium water. They share similar growing requirements and can be planted in the same bed.

Which grows taller, Asparagus or Black-Eyed Susan?

Asparagus grows taller at 5' compared to Black-Eyed Susan at 3'. Asparagus spreads 1' 6" while Black-Eyed Susan spreads 1' 6".

Are Asparagus and Black-Eyed Susan deer resistant?

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

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

Both Asparagus 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	Asparagus	Black-Eyed Susan
Scientific Name	Asparagus officinalis	Rudbeckia hirta
Family	Asparagaceae	Asteraceae
Category	vegetables	flowers
Sun	☀️ Full Sun	☀️ Full Sun
Water	💧💧 Medium	💧💧 Medium
Soil	Rich, Well-drained, Sandy	Well-drained
Height	5'	3'
Spread	1' 6"	1' 6"
Bloom Season	Spring	Summer-Fall
Bloom Color	Yellow-green	Yellow
Growth Rate	Medium	Fast
Native Region	Europe, Western Asia	Eastern North America
Maintenance	Low	Low

Care Tips

Asparagus

✓Plant crowns in trenches 12 inches deep.
✓Don't harvest for first 2 years — let ferns grow to strengthen roots.
✓Harvest for 6-8 weeks in established beds.
✓Cut all spears regardless of size.

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 Asparagus if you want a low-maintenance plant, and want deer resistance. It thrives in full sun with medium water in zones 3–8.

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 3–8. They share similar sun requirements (full sun), making them potential garden companions.

Frequently Asked Questions

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

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

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

Asparagus needs full sun and medium water, while Black-Eyed Susan needs full sun and medium water. They share similar growing requirements and can be planted in the same bed.

Which grows taller, Asparagus or Black-Eyed Susan?

Asparagus grows taller at 5' compared to Black-Eyed Susan at 3'. Asparagus spreads 1' 6" while Black-Eyed Susan spreads 1' 6".

Are Asparagus and Black-Eyed Susan deer resistant?

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

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

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