Astilbe vs Radish

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

Astilbe

Astilbe × arendsii

Saxifragaceae · flowers

Deer ResistantLow Maintenance

Radish

Raphanus sativus

Brassicaceae · vegetables

EdibleLow Maintenance

Hardiness Zone Range

Astilbe (Zones 4-8)

Radish (Zones 2-11)

Overlap: Both grow in zones 4–8

Detailed Comparison

Feature	Astilbe	Radish
Scientific Name	Astilbe × arendsii	Raphanus sativus
Family	Saxifragaceae	Brassicaceae
Category	flowers	vegetables
Sun	⛅ Part Shade	☀️ Full Sun
Water	💧💧 Medium to High	💧💧 Medium
Soil	Rich, Moist	Loose, Well-drained
Height	3'	6"
Spread	2'	3"
Bloom Season	Summer	Spring, Fall
Bloom Color	Red, Pink, White, Purple	White, Pink
Growth Rate	Medium	Fast
Native Region	East Asia	Southeast Asia
Maintenance	Low	Low

Special Traits

Astilbe

No — EdibleYes — Deer ResistantNo — Drought Tolerant

Radish

Yes — EdibleNo — 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.

Radish

✓Direct sow — don't transplant.
✓Thin to 2 inches apart.
✓Harvest promptly to prevent pithy texture.
✓Great marker crop planted with slow-germinating carrots.

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 Radish if you want a low-maintenance plant. It thrives in full sun 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 RadishProfile →

Frequently Asked Questions

Can Astilbe and Radish grow in the same hardiness zone?

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

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

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

Which grows taller, Astilbe or Radish?

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

Are Astilbe and Radish deer resistant?

Astilbe is deer resistant, but Radish is not. If deer are a concern, Astilbe is the better choice, or protect Radish with fencing.

Which is easier to maintain, Astilbe or Radish?

Both Astilbe and Radish 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	Radish
Scientific Name	Astilbe × arendsii	Raphanus sativus
Family	Saxifragaceae	Brassicaceae
Category	flowers	vegetables
Sun	⛅ Part Shade	☀️ Full Sun
Water	💧💧 Medium to High	💧💧 Medium
Soil	Rich, Moist	Loose, Well-drained
Height	3'	6"
Spread	2'	3"
Bloom Season	Summer	Spring, Fall
Bloom Color	Red, Pink, White, Purple	White, Pink
Growth Rate	Medium	Fast
Native Region	East Asia	Southeast Asia
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.

Radish

✓Direct sow — don't transplant.
✓Thin to 2 inches apart.
✓Harvest promptly to prevent pithy texture.
✓Great marker crop planted with slow-germinating carrots.

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 Radish if you want a low-maintenance plant. It thrives in full sun 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 Radish grow in the same hardiness zone?

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

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

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

Which grows taller, Astilbe or Radish?

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

Are Astilbe and Radish deer resistant?

Astilbe is deer resistant, but Radish is not. If deer are a concern, Astilbe is the better choice, or protect Radish with fencing.

Which is easier to maintain, Astilbe or Radish?

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