Knock Out Rose
Rosa x hybrida 'Knock Out'
Essentials
At a Glance
Plant Type
Shrub
Height
42 inches
Width
36 inches
Light
Full Sun, Partial Sun
Zones
4, 5, 6, 7, 8, 9
Water
Moderate
Humidity
Moderate
Lifespan
10+ years
Native To
Cultivated variety
Toxicity
Non-toxic
The Story
Plant Bio
Rosa x hybrida 'Knock Out' is a deciduous shrub renowned for its vigorous growth, abundant double flowers, and glossy green foliage, producing continuous clusters of bright red blooms throughout the growing season. This cultivar is celebrated for its exceptional disease resistance, low maintenance requirements, and its ability to rebloom prolifically with minimal pruning, making it highly popular in landscape design.
Uses & Benefits:
Marketplace
Where to Buy
Shipping costs Year-round shipping Free shipping
Planting
How to Grow
- Tuck bare-root or potted plant into well-drained soil
- Water thoroughly after planting and keep soil moist
- Apply balanced fertilizer in early spring for best growth
- Prune lightly in early spring to shape and remove dead wood
- Mulch around base to retain moisture and suppress weeds
- Monitor for pests and treat organically if needed
Pro Tip
Plant in full sun for optimal flowering and health
Keep It Thriving
Care Guide
Do
- Water regularly, especially in dry periods 🌱
- Prune lightly to maintain shape
- Feed with balanced fertilizer in spring
- Mulch to conserve moisture
- Monitor for pests and treat organically
Don't
- Avoid overwatering, which can cause root rot ❌
- Don’t prune in late fall or winter
- Avoid heavy fertilization late in the season
- Do not ignore pest infestations
Seasonal Care Calendar
| Task | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Fertilize | ||||||||||||
| Mulch | ||||||||||||
| Pest Check | ||||||||||||
| 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
Knock Out Rose questions
What zones can Knock Out Rose grow in?
Knock Out Rose is hardy in USDA Zones 4–10. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.
Is Knock Out Rose deer resistant?
Not reliably. Deer may browse Knock Out Rose, especially tender spring growth — plan on repellents or fencing where pressure is high.
When does Knock Out Rose bloom?
Knock Out Rose typically blooms in spring to frost through late fall. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.
Does Knock Out Rose need full sun?
Knock Out Rose does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.
Is Knock Out Rose drought tolerant?
Yes — once established (usually after the first full season), 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 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.
