Astilbe vs Geranium

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

Astilbe

Astilbe × arendsii

Saxifragaceae · flowers

Deer ResistantLow Maintenance

Geranium

Pelargonium × hortorum

Geraniaceae · flowers

Deer ResistantDrought TolerantMedium Maintenance

Hardiness Zone Range

Astilbe (Zones 4-8)

Geranium (Zones 9-11)

No zone overlap — these plants cannot be grown in the same climate

Detailed Comparison

Feature	Astilbe	Geranium
Scientific Name	Astilbe × arendsii	Pelargonium × hortorum
Family	Saxifragaceae	Geraniaceae
Category	flowers	flowers
Sun	⛅ Part Shade	☀️ Full Sun
Water	💧💧 Medium to High	💧💧 Medium
Soil	Rich, Moist	Well-drained
Height	3'	1' 6"
Spread	2'	1' 6"
Bloom Season	Summer	Spring-Fall
Bloom Color	Red, Pink, White, Purple	Red, Pink, White, Salmon
Growth Rate	Medium	Fast
Native Region	East Asia	South Africa
Maintenance	Low	Medium

Special Traits

Astilbe

No — EdibleYes — Deer ResistantNo — Drought Tolerant

Geranium

No — EdibleYes — Deer ResistantYes — Drought Tolerant

Care Tips

Astilbe

✓Must have consistently moist soil — wilts quickly if dry.
✓Divide every 3-4 years.
✓Leave dried flower heads for winter texture.
✓Feed in spring with balanced fertilizer.

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.

Which Plant Is Right for Your Garden?

Choose Astilbe if you want a low-maintenance plant, and want deer resistance. It thrives in part shade with medium to high water in zones 4–8.

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.

View AstilbeProfile →View GeraniumProfile →

Frequently Asked Questions

Can Astilbe and Geranium grow in the same hardiness zone?

Astilbe grows in USDA zones 4-8, while Geranium grows in zones 9-11. These plants have no overlapping hardiness zones, so they cannot be grown together in the same climate.

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

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

Which grows taller, Astilbe or Geranium?

Astilbe grows taller at 3' compared to Geranium at 1' 6". Astilbe spreads 2' while Geranium spreads 1' 6".

Are Astilbe and Geranium deer resistant?

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

Which is easier to maintain, Astilbe or Geranium?

Astilbe has low maintenance while Geranium has medium maintenance. Astilbe may be easier for beginning gardeners to manage.

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Detailed Comparison

Feature	Astilbe	Geranium
Scientific Name	Astilbe × arendsii	Pelargonium × hortorum
Family	Saxifragaceae	Geraniaceae
Category	flowers	flowers
Sun	⛅ Part Shade	☀️ Full Sun
Water	💧💧 Medium to High	💧💧 Medium
Soil	Rich, Moist	Well-drained
Height	3'	1' 6"
Spread	2'	1' 6"
Bloom Season	Summer	Spring-Fall
Bloom Color	Red, Pink, White, Purple	Red, Pink, White, Salmon
Growth Rate	Medium	Fast
Native Region	East Asia	South Africa
Maintenance	Low	Medium

Care Tips

Astilbe

✓Must have consistently moist soil — wilts quickly if dry.
✓Divide every 3-4 years.
✓Leave dried flower heads for winter texture.
✓Feed in spring with balanced fertilizer.

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.

Which Plant Is Right for Your Garden?

Choose Astilbe if you want a low-maintenance plant, and want deer resistance. It thrives in part shade with medium to high water in zones 4–8.

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.

Frequently Asked Questions

Can Astilbe and Geranium grow in the same hardiness zone?

Astilbe grows in USDA zones 4-8, while Geranium grows in zones 9-11. These plants have no overlapping hardiness zones, so they cannot be grown together in the same climate.

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

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

Which grows taller, Astilbe or Geranium?

Astilbe grows taller at 3' compared to Geranium at 1' 6". Astilbe spreads 2' while Geranium spreads 1' 6".

Are Astilbe and Geranium deer resistant?

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

Which is easier to maintain, Astilbe or Geranium?

Astilbe has low maintenance while Geranium has medium maintenance. Astilbe may be easier for beginning gardeners to manage.