Knockout Rose vs Lily of the Valley

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

Knockout Rose

Rosa 'Radrazz'

Rosaceae · flowers

Drought TolerantLow Maintenance

Lily of the Valley

Convallaria majalis

Asparagaceae · flowers

Deer ResistantLow Maintenance

Hardiness Zone Range

Knockout Rose (Zones 5-10)

Lily of the Valley (Zones 3-8)

Overlap: Both grow in zones 5–8

Detailed Comparison

Feature	Knockout Rose	Lily of the Valley
Scientific Name	Rosa 'Radrazz'	Convallaria majalis
Family	Rosaceae	Asparagaceae
Category	flowers	flowers
Sun	☀️ Full Sun	⛅ Part Shade to Full Shade
Water	💧💧 Medium	💧💧 Medium
Soil	Well-drained	Rich, Moist
Height	4'	8"
Spread	4'	1'
Bloom Season	Spring-Fall	Spring
Bloom Color	Red, Pink	White
Growth Rate	Fast	Medium
Native Region	Hybrid (US)	Europe, Asia
Maintenance	Low	Low

Special Traits

Knockout Rose

No — EdibleNo — Deer ResistantYes — Drought Tolerant

Lily of the Valley

No — EdibleYes — Deer ResistantNo — Drought Tolerant

Care Tips

Knockout Rose

✓Prune by 1/3 in late winter.
✓No spraying needed — highly disease resistant.
✓Deadheading optional but encourages faster rebloom.
✓Feed in spring.

Lily of the Valley

✓Plant pips (roots) in fall.
✓Spreads aggressively — contain with barriers or use in areas where spreading is desired.
✓All parts are poisonous.

Which Plant Is Right for Your Garden?

Choose Knockout Rose if you want a low-maintenance plant, need drought tolerance. It thrives in full sun with medium water in zones 5–10.

Choose Lily of the Valley if you want a low-maintenance plant, and want deer resistance. It thrives in part shade to full shade with medium water in zones 3–8.

Plant them together? Both overlap in zones 5–8. However, they have different sun needs, so plan your garden layout carefully.

View Knockout RoseProfile →View Lily of the ValleyProfile →

Frequently Asked Questions

Can Knockout Rose and Lily of the Valley grow in the same hardiness zone?

Knockout Rose grows in USDA zones 5-10, while Lily of the Valley grows in zones 3-8. Both plants can grow together in zones 5 through 8.

Do Knockout Rose and Lily of the Valley have the same sun and water needs?

Knockout Rose needs full sun and medium water, while Lily of the Valley needs part shade to full shade and medium water. Their differing requirements mean you may need separate garden areas for each.

Which grows taller, Knockout Rose or Lily of the Valley?

Knockout Rose grows taller at 4' compared to Lily of the Valley at 8". Knockout Rose spreads 4' while Lily of the Valley spreads 1'.

Are Knockout Rose and Lily of the Valley deer resistant?

Lily of the Valley is deer resistant, but Knockout Rose is not. If deer are a concern, Lily of the Valley is the better choice, or protect Knockout Rose with fencing.

Which is easier to maintain, Knockout Rose or Lily of the Valley?

Both Knockout Rose and Lily of the Valley 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	Knockout Rose	Lily of the Valley
Scientific Name	Rosa 'Radrazz'	Convallaria majalis
Family	Rosaceae	Asparagaceae
Category	flowers	flowers
Sun	☀️ Full Sun	⛅ Part Shade to Full Shade
Water	💧💧 Medium	💧💧 Medium
Soil	Well-drained	Rich, Moist
Height	4'	8"
Spread	4'	1'
Bloom Season	Spring-Fall	Spring
Bloom Color	Red, Pink	White
Growth Rate	Fast	Medium
Native Region	Hybrid (US)	Europe, Asia
Maintenance	Low	Low

Care Tips

Knockout Rose

✓Prune by 1/3 in late winter.
✓No spraying needed — highly disease resistant.
✓Deadheading optional but encourages faster rebloom.
✓Feed in spring.

Lily of the Valley

✓Plant pips (roots) in fall.
✓Spreads aggressively — contain with barriers or use in areas where spreading is desired.
✓All parts are poisonous.

Which Plant Is Right for Your Garden?

Choose Knockout Rose if you want a low-maintenance plant, need drought tolerance. It thrives in full sun with medium water in zones 5–10.

Choose Lily of the Valley if you want a low-maintenance plant, and want deer resistance. It thrives in part shade to full shade with medium water in zones 3–8.

Plant them together? Both overlap in zones 5–8. However, they have different sun needs, so plan your garden layout carefully.

Frequently Asked Questions

Can Knockout Rose and Lily of the Valley grow in the same hardiness zone?

Knockout Rose grows in USDA zones 5-10, while Lily of the Valley grows in zones 3-8. Both plants can grow together in zones 5 through 8.

Do Knockout Rose and Lily of the Valley have the same sun and water needs?

Knockout Rose needs full sun and medium water, while Lily of the Valley needs part shade to full shade and medium water. Their differing requirements mean you may need separate garden areas for each.

Which grows taller, Knockout Rose or Lily of the Valley?

Knockout Rose grows taller at 4' compared to Lily of the Valley at 8". Knockout Rose spreads 4' while Lily of the Valley spreads 1'.

Are Knockout Rose and Lily of the Valley deer resistant?

Lily of the Valley is deer resistant, but Knockout Rose is not. If deer are a concern, Lily of the Valley is the better choice, or protect Knockout Rose with fencing.

Which is easier to maintain, Knockout Rose or Lily of the Valley?

Both Knockout Rose and Lily of the Valley have low maintenance requirements. They need a similar level of care including regular attention to watering, pruning, and soil health.