Astilbe vs Kale

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

Astilbe

Astilbe × arendsii

Saxifragaceae · flowers

Deer ResistantLow Maintenance

Kale

Brassica oleracea var. sabellica

Brassicaceae · vegetables

EdibleDeer ResistantLow Maintenance

Hardiness Zone Range

Astilbe (Zones 4-8)

Kale (Zones 2-11)

Overlap: Both grow in zones 4–8

Detailed Comparison

Feature	Astilbe	Kale
Scientific Name	Astilbe × arendsii	Brassica oleracea var. sabellica
Family	Saxifragaceae	Brassicaceae
Category	flowers	vegetables
Sun	⛅ Part Shade	☀️ Full Sun to Part Shade
Water	💧💧 Medium to High	💧💧 Medium
Soil	Rich, Moist	Rich, Well-drained
Height	3'	2'
Spread	2'	1' 6"
Bloom Season	Summer	Spring, Fall, Winter
Bloom Color	Red, Pink, White, Purple	Yellow (second year)
Growth Rate	Medium	Fast
Native Region	East Asia	Mediterranean
Maintenance	Low	Low

Special Traits

Astilbe

No — EdibleYes — Deer ResistantNo — Drought Tolerant

Kale

Yes — EdibleYes — Deer ResistantNo — 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.

Kale

✓Direct sow or transplant.
✓Harvest outer leaves for continuous production.
✓Frost improves flavor.
✓Resistant to many pests.
✓Can overwinter in zones 6+ with protection.

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 Kale if you want a low-maintenance plant, and want deer resistance. It thrives in full sun to part shade with medium water in zones 2–11.

Plant them together? Both overlap in zones 4–8. However, they have different sun needs, so plan your garden layout carefully.

View AstilbeProfile →View KaleProfile →

Frequently Asked Questions

Can Astilbe and Kale grow in the same hardiness zone?

Astilbe grows in USDA zones 4-8, while Kale grows in zones 2-11. Both plants can grow together in zones 4 through 8.

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

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

Which grows taller, Astilbe or Kale?

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

Are Astilbe and Kale deer resistant?

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

Which is easier to maintain, Astilbe or Kale?

Both Astilbe and Kale 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	Astilbe	Kale
Scientific Name	Astilbe × arendsii	Brassica oleracea var. sabellica
Family	Saxifragaceae	Brassicaceae
Category	flowers	vegetables
Sun	⛅ Part Shade	☀️ Full Sun to Part Shade
Water	💧💧 Medium to High	💧💧 Medium
Soil	Rich, Moist	Rich, Well-drained
Height	3'	2'
Spread	2'	1' 6"
Bloom Season	Summer	Spring, Fall, Winter
Bloom Color	Red, Pink, White, Purple	Yellow (second year)
Growth Rate	Medium	Fast
Native Region	East Asia	Mediterranean
Maintenance	Low	Low

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.

Kale

✓Direct sow or transplant.
✓Harvest outer leaves for continuous production.
✓Frost improves flavor.
✓Resistant to many pests.
✓Can overwinter in zones 6+ with protection.

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 Kale if you want a low-maintenance plant, and want deer resistance. It thrives in full sun to part shade with medium water in zones 2–11.

Plant them together? Both overlap in zones 4–8. However, they have different sun needs, so plan your garden layout carefully.

Frequently Asked Questions

Can Astilbe and Kale grow in the same hardiness zone?

Astilbe grows in USDA zones 4-8, while Kale grows in zones 2-11. Both plants can grow together in zones 4 through 8.

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

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

Which grows taller, Astilbe or Kale?

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

Are Astilbe and Kale deer resistant?

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

Which is easier to maintain, Astilbe or Kale?

Both Astilbe and Kale have low maintenance requirements. They need a similar level of care including regular attention to watering, pruning, and soil health.