Asparagus vs Sweet Pea

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

Asparagus

Asparagus officinalis

Asparagaceae · vegetables

EdibleDeer ResistantLow Maintenance

Sweet Pea

Lathyrus odoratus

Fabaceae · flowers

Deer ResistantMedium Maintenance

Hardiness Zone Range

Asparagus (Zones 3-8)

Sweet Pea (Zones 2-11)

Overlap: Both grow in zones 3–8

Detailed Comparison

Feature	Asparagus	Sweet Pea
Scientific Name	Asparagus officinalis	Lathyrus odoratus
Family	Asparagaceae	Fabaceae
Category	vegetables	flowers
Sun	☀️ Full Sun	☀️ Full Sun
Water	💧💧 Medium	💧💧 Medium
Soil	Rich, Well-drained, Sandy	Rich, Well-drained
Height	5'	6'
Spread	1' 6"	1'
Bloom Season	Spring	Spring-Summer
Bloom Color	Yellow-green	Mixed
Growth Rate	Medium	Fast
Native Region	Europe, Western Asia	Italy, Sicily
Maintenance	Low	Medium

Special Traits

Asparagus

Yes — EdibleYes — Deer ResistantNo — Drought Tolerant

Sweet Pea

No — EdibleYes — Deer ResistantNo — 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.

Sweet Pea

✓Soak seeds overnight before planting.
✓Provide trellis or netting.
✓Pick flowers frequently to prolong bloom.
✓Needs cool weather — plant early spring or fall in warm areas.

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 Sweet Pea if you don't mind medium maintenance, and want deer resistance. It thrives in full sun with medium water in zones 2–11.

Plant them together? Both overlap in zones 3–8. They share similar sun requirements (full sun), making them potential garden companions.

View AsparagusProfile →View Sweet PeaProfile →

Frequently Asked Questions

Can Asparagus and Sweet Pea grow in the same hardiness zone?

Asparagus grows in USDA zones 3-8, while Sweet Pea grows in zones 2-11. Both plants can grow together in zones 3 through 8.

Do Asparagus and Sweet Pea have the same sun and water needs?

Asparagus needs full sun and medium water, while Sweet Pea needs full sun and medium water. They share similar growing requirements and can be planted in the same bed.

Which grows taller, Asparagus or Sweet Pea?

Sweet Pea grows taller at 6' compared to Asparagus at 5'. Sweet Pea spreads 1' while Asparagus spreads 1' 6".

Are Asparagus and Sweet Pea deer resistant?

Yes, both Asparagus and Sweet Pea are considered deer resistant, making them excellent choices for gardens in areas with deer pressure.

Which is easier to maintain, Asparagus or Sweet Pea?

Asparagus has low maintenance while Sweet Pea has medium maintenance. Asparagus may be easier for beginning gardeners to manage.

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Detailed Comparison

Feature	Asparagus	Sweet Pea
Scientific Name	Asparagus officinalis	Lathyrus odoratus
Family	Asparagaceae	Fabaceae
Category	vegetables	flowers
Sun	☀️ Full Sun	☀️ Full Sun
Water	💧💧 Medium	💧💧 Medium
Soil	Rich, Well-drained, Sandy	Rich, Well-drained
Height	5'	6'
Spread	1' 6"	1'
Bloom Season	Spring	Spring-Summer
Bloom Color	Yellow-green	Mixed
Growth Rate	Medium	Fast
Native Region	Europe, Western Asia	Italy, Sicily
Maintenance	Low	Medium

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.

Sweet Pea

✓Soak seeds overnight before planting.
✓Provide trellis or netting.
✓Pick flowers frequently to prolong bloom.
✓Needs cool weather — plant early spring or fall in warm areas.

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 Sweet Pea if you don't mind medium maintenance, and want deer resistance. It thrives in full sun with medium water in zones 2–11.

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 Sweet Pea grow in the same hardiness zone?

Asparagus grows in USDA zones 3-8, while Sweet Pea grows in zones 2-11. Both plants can grow together in zones 3 through 8.

Do Asparagus and Sweet Pea have the same sun and water needs?

Asparagus needs full sun and medium water, while Sweet Pea needs full sun and medium water. They share similar growing requirements and can be planted in the same bed.

Which grows taller, Asparagus or Sweet Pea?

Sweet Pea grows taller at 6' compared to Asparagus at 5'. Sweet Pea spreads 1' while Asparagus spreads 1' 6".

Are Asparagus and Sweet Pea deer resistant?

Yes, both Asparagus and Sweet Pea are considered deer resistant, making them excellent choices for gardens in areas with deer pressure.

Which is easier to maintain, Asparagus or Sweet Pea?

Asparagus has low maintenance while Sweet Pea has medium maintenance. Asparagus may be easier for beginning gardeners to manage.