Balloon Flower vs Sweet Pea

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

Balloon Flower

Platycodon grandiflorus

Campanulaceae · flowers

Deer ResistantLow Maintenance

Sweet Pea

Lathyrus odoratus

Fabaceae · flowers

Deer ResistantMedium Maintenance

Hardiness Zone Range

Balloon Flower (Zones 3-8)

Sweet Pea (Zones 2-11)

Overlap: Both grow in zones 3–8

Detailed Comparison

Feature	Balloon Flower	Sweet Pea
Scientific Name	Platycodon grandiflorus	Lathyrus odoratus
Family	Campanulaceae	Fabaceae
Category	flowers	flowers
Sun	☀️ Full Sun to Part Shade	☀️ Full Sun
Water	💧💧 Medium	💧💧 Medium
Soil	Well-drained	Rich, Well-drained
Height	2'	6'
Spread	1'	1'
Bloom Season	Summer	Spring-Summer
Bloom Color	Blue, White, Pink	Mixed
Growth Rate	Medium	Fast
Native Region	East Asia	Italy, Sicily
Maintenance	Low	Medium

Special Traits

Balloon Flower

No — EdibleYes — Deer ResistantNo — Drought Tolerant

Sweet Pea

No — EdibleYes — Deer ResistantNo — Drought Tolerant

Care Tips

Balloon Flower

✓Late to emerge in spring — mark location to avoid damage.
✓Deep taproot — don't transplant.
✓Cut back after flowering.
✓Deer and pest resistant.

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 Balloon Flower if you want a low-maintenance plant, and want deer resistance. It thrives in full sun to part shade 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. However, they have different sun needs, so plan your garden layout carefully.

View Balloon FlowerProfile →View Sweet PeaProfile →

Frequently Asked Questions

Can Balloon Flower and Sweet Pea grow in the same hardiness zone?

Balloon Flower 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 Balloon Flower and Sweet Pea have the same sun and water needs?

Balloon Flower needs full sun to part shade and medium water, while Sweet Pea needs full sun and medium water. Their differing requirements mean you may need separate garden areas for each.

Which grows taller, Balloon Flower or Sweet Pea?

Sweet Pea grows taller at 6' compared to Balloon Flower at 2'. Sweet Pea spreads 1' while Balloon Flower spreads 1'.

Are Balloon Flower and Sweet Pea deer resistant?

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

Which is easier to maintain, Balloon Flower or Sweet Pea?

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

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Detailed Comparison

Feature	Balloon Flower	Sweet Pea
Scientific Name	Platycodon grandiflorus	Lathyrus odoratus
Family	Campanulaceae	Fabaceae
Category	flowers	flowers
Sun	☀️ Full Sun to Part Shade	☀️ Full Sun
Water	💧💧 Medium	💧💧 Medium
Soil	Well-drained	Rich, Well-drained
Height	2'	6'
Spread	1'	1'
Bloom Season	Summer	Spring-Summer
Bloom Color	Blue, White, Pink	Mixed
Growth Rate	Medium	Fast
Native Region	East Asia	Italy, Sicily
Maintenance	Low	Medium

Care Tips

Balloon Flower

✓Late to emerge in spring — mark location to avoid damage.
✓Deep taproot — don't transplant.
✓Cut back after flowering.
✓Deer and pest resistant.

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 Balloon Flower if you want a low-maintenance plant, and want deer resistance. It thrives in full sun to part shade 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. However, they have different sun needs, so plan your garden layout carefully.

Frequently Asked Questions

Can Balloon Flower and Sweet Pea grow in the same hardiness zone?

Balloon Flower 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 Balloon Flower and Sweet Pea have the same sun and water needs?

Balloon Flower needs full sun to part shade and medium water, while Sweet Pea needs full sun and medium water. Their differing requirements mean you may need separate garden areas for each.

Which grows taller, Balloon Flower or Sweet Pea?

Sweet Pea grows taller at 6' compared to Balloon Flower at 2'. Sweet Pea spreads 1' while Balloon Flower spreads 1'.

Are Balloon Flower and Sweet Pea deer resistant?

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

Which is easier to maintain, Balloon Flower or Sweet Pea?

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