Geranium vs Hydrangea

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

Geranium

Pelargonium × hortorum

Geraniaceae · flowers

Deer ResistantDrought TolerantMedium Maintenance

Hydrangea

Hydrangea macrophylla

Hydrangeaceae · flowers

Deer ResistantMedium Maintenance

Hardiness Zone Range

Geranium (Zones 9-11)

Hydrangea (Zones 5-9)

Overlap: Both grow in zones 9–9

Detailed Comparison

Feature	Geranium	Hydrangea
Scientific Name	Pelargonium × hortorum	Hydrangea macrophylla
Family	Geraniaceae	Hydrangeaceae
Category	flowers	flowers
Sun	☀️ Full Sun	⛅ Part Shade
Water	💧💧 Medium	💧💧 Medium to High
Soil	Well-drained	Rich, Moist
Height	1' 6"	6'
Spread	1' 6"	6'
Bloom Season	Spring-Fall	Summer
Bloom Color	Red, Pink, White, Salmon	Blue, Pink, White
Growth Rate	Fast	Medium
Native Region	South Africa	Japan
Maintenance	Medium	Medium

Special Traits

Geranium

No — EdibleYes — Deer ResistantYes — Drought Tolerant

Hydrangea

No — EdibleYes — Deer ResistantNo — Drought Tolerant

Care Tips

Geranium

✓Deadhead spent flower stems at base.
✓Let soil dry slightly between waterings.
✓Feed every 2 weeks.
✓Overwinter indoors in cold climates.
✓Excellent in containers.

Hydrangea

✓Prune after flowering on old wood varieties.
✓Add aluminum sulfate for blue flowers, lime for pink.
✓Protect from afternoon sun in hot climates.

Which Plant Is Right for Your Garden?

Choose Geranium if you don't mind medium maintenance, need drought tolerance, and want deer resistance. It thrives in full sun with medium water in zones 9–11.

Choose Hydrangea if you don't mind medium maintenance, and want deer resistance. It thrives in part shade with medium to high water in zones 5–9.

Plant them together? Both overlap in zones 9–9. However, they have different sun needs, so plan your garden layout carefully.

View GeraniumProfile →View HydrangeaProfile →

Frequently Asked Questions

Can Geranium and Hydrangea grow in the same hardiness zone?

Geranium grows in USDA zones 9-11, while Hydrangea grows in zones 5-9. Both plants can grow together in zones 9 through 9.

Do Geranium and Hydrangea have the same sun and water needs?

Geranium needs full sun and medium water, while Hydrangea needs part shade and medium to high water. Their differing requirements mean you may need separate garden areas for each.

Which grows taller, Geranium or Hydrangea?

Hydrangea grows taller at 6' compared to Geranium at 1' 6". Hydrangea spreads 6' while Geranium spreads 1' 6".

Are Geranium and Hydrangea deer resistant?

Yes, both Geranium and Hydrangea are considered deer resistant, making them excellent choices for gardens in areas with deer pressure.

Which is easier to maintain, Geranium or Hydrangea?

Both Geranium and Hydrangea have medium 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	Geranium	Hydrangea
Scientific Name	Pelargonium × hortorum	Hydrangea macrophylla
Family	Geraniaceae	Hydrangeaceae
Category	flowers	flowers
Sun	☀️ Full Sun	⛅ Part Shade
Water	💧💧 Medium	💧💧 Medium to High
Soil	Well-drained	Rich, Moist
Height	1' 6"	6'
Spread	1' 6"	6'
Bloom Season	Spring-Fall	Summer
Bloom Color	Red, Pink, White, Salmon	Blue, Pink, White
Growth Rate	Fast	Medium
Native Region	South Africa	Japan
Maintenance	Medium	Medium

Care Tips

Geranium

✓Deadhead spent flower stems at base.
✓Let soil dry slightly between waterings.
✓Feed every 2 weeks.
✓Overwinter indoors in cold climates.
✓Excellent in containers.

Hydrangea

✓Prune after flowering on old wood varieties.
✓Add aluminum sulfate for blue flowers, lime for pink.
✓Protect from afternoon sun in hot climates.

Which Plant Is Right for Your Garden?

Choose Geranium if you don't mind medium maintenance, need drought tolerance, and want deer resistance. It thrives in full sun with medium water in zones 9–11.

Choose Hydrangea if you don't mind medium maintenance, and want deer resistance. It thrives in part shade with medium to high water in zones 5–9.

Plant them together? Both overlap in zones 9–9. However, they have different sun needs, so plan your garden layout carefully.

Frequently Asked Questions

Can Geranium and Hydrangea grow in the same hardiness zone?

Geranium grows in USDA zones 9-11, while Hydrangea grows in zones 5-9. Both plants can grow together in zones 9 through 9.

Do Geranium and Hydrangea have the same sun and water needs?

Geranium needs full sun and medium water, while Hydrangea needs part shade and medium to high water. Their differing requirements mean you may need separate garden areas for each.

Which grows taller, Geranium or Hydrangea?

Hydrangea grows taller at 6' compared to Geranium at 1' 6". Hydrangea spreads 6' while Geranium spreads 1' 6".

Are Geranium and Hydrangea deer resistant?

Yes, both Geranium and Hydrangea are considered deer resistant, making them excellent choices for gardens in areas with deer pressure.

Which is easier to maintain, Geranium or Hydrangea?

Both Geranium and Hydrangea have medium maintenance requirements. They need a similar level of care including regular attention to watering, pruning, and soil health.