Double Knock Out Rose
Rosa x hybrida 'Double Knock Out'
Essentials
At a Glance
Plant Type
Shrub
Height
42 inches
Width
42 inches
Light
Full Sun, Partial Sun
Zones
5, 6, 7, 8, 9
Water
Moderate
Humidity
Moderate
Lifespan
10+ years
Native To
Cultivated hybrid
Toxicity
Non-toxic to humans and pets (thorns can cause injury)
The Story
Plant Bio
Rosa x hybrida 'Double Knock Out' is a deciduous shrub renowned for its prolific, double, bright red flowers and glossy, dark green foliage, providing continuous blooms throughout the growing season. This cultivar is celebrated for its exceptional disease resistance, low maintenance, and ability to thrive in a variety of garden conditions, making it ideal for both novice and experienced gardeners.
Uses & Benefits:
Marketplace
Where to Buy
Shipping costs Year-round shipping Free shipping
Planting
How to Grow
- Tuck healthy rooted cuttings into well-draining soil.
- Water thoroughly after planting and keep soil moist.
- Fertilize with a balanced rose fertilizer every 6 weeks.
- Prune in early spring to maintain shape and remove dead wood.
- Mulch around base to retain moisture and suppress weeds.
- Monitor regularly for pests and diseases, treat as needed.
Pro Tip
Plant in full sun with good air circulation for best blooms.
Keep It Thriving
Care Guide
Do
- Water deeply once a week during dry spells 🌱
- Prune to shape and remove dead wood in early spring
- Apply fertilizer during the growing season
- Mulch to conserve moisture and regulate soil temperature
- Monitor for pests and treat organically when possible
Don't
- Overwater to prevent root rot ❌
- Avoid heavy pruning in late summer
- Do not fertilize late in the season
- Don’t plant in overly shaded spots
Seasonal Care Calendar
| Task | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Fertilize | ||||||||||||
| Mulch | ||||||||||||
| Prune |
Watch Out For
Pests & Diseases
Common Pests
Common Diseases
In the Garden
Landscape Uses & Companions
Landscape Uses
Companion Plants
Multiply
Propagation Methods
Good to Know
Common Questions
Double Knock Out Rose questions
What zones can Double Knock Out Rose grow in?
Double Knock Out Rose is hardy in USDA Zones 5–10. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.
Is Double Knock Out Rose deer resistant?
Not reliably. Deer may browse Double Knock Out Rose, especially tender spring growth — plan on repellents or fencing where pressure is high.
When does Double Knock Out Rose bloom?
Double Knock Out Rose typically blooms in spring to frost through late summer. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.
Does Double Knock Out Rose need full sun?
Double Knock Out Rose does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.
Is Double Knock Out Rose drought tolerant?
Yes — once established (usually after the first full season), Double Knock Out Rose handles dry spells with minimal watering. Water deeply its first year to build the root system that makes that possible.
More Rosa to compare
Flutterbye Rose
Rosa x hybrida 'Flutterbye'
Joseph's Coat Rose
Rosa x floribunda 'Joseph's Coat'
In Your Eyes Rose
Rosa x hybrida 'In Your Eyes'
Rainbow Rose
Rosa x hybrida 'Rainbow'
Twilight Zone Rose
Rosa x grandiflora 'Twilight Zone'
Fun in the Sun Rose
Rosa x hybrida 'Fun in the Sun'
Keep exploring
Explore the genus
Collections featuring this plant
Grow Double Knock Out Rose with confidence
See it in a design of your actual yard, get zone-matched care reminders, and track it season by season in your garden journal.
