Knock Out Rose
For sale in Lawrenceville, GA
- Fast (1-2 ft/year)
- Full Sun
- Cold hardy to USDA Zone 8a
- Georgia grown & ready to plant
Secure checkoutLicensed & insured installation crew
About Knock Out Rose
Knock Out Rose revolutionized landscape rose use when it was introduced because it blooms continuously from spring until frost without the deadheading traditional hybrid tea roses require, and it shows strong resistance to blackspot, the fungal disease that defoliates most roses in Georgia's humid summers. It grows into a rounded, self-cleaning shrub 3-4 feet tall and wide, producing single, cherry-red 3-inch flowers in flushes every 5-6 weeks through the growing season. Full sun, at least 6 hours daily, is essential for the heaviest continuous bloom and the best disease resistance; Knock Out Rose planted in shade blooms less and becomes more susceptible to blackspot and powdery mildew. It tolerates Georgia's clay soil reasonably well provided drainage is adequate, since roses generally dislike standing water at the root zone. Its combination of nearly maintenance-free continuous bloom and strong disease resistance is why Knock Out Rose became one of the best-selling roses in American nursery history and remains a staple of Lawrenceville foundation and border plantings.
🚚 Delivery available to Lawrenceville and all of Gwinnett County — see our service area for exact timing.
Plant Specifications
| Mature Height | 3-4 ft |
|---|---|
| Mature Width | 3-4 ft |
| Sun Requirements | Full Sun |
| Water Needs | Moderate — drought tolerant once established |
| Bloom Season | Spring through Frost (continuous rebloom) |
| Growth Rate | Fast (1-2 ft/year) |
| USDA Hardiness Zone | 8a |
| Deer Resistant | No |
| Pet Safe | Check with a vet |
| Native to Georgia | No |
Planting Instructions & Regional Tips
Plant Knock Out Rose in full sun, at least 6 hours daily, in well-drained soil; raise the planting site slightly in heavy Georgia clay to prevent root rot. Space plants 3-4 feet apart for a hedge or mass planting. Water deeply weekly the first season; established plants are fairly drought tolerant. Prune back by about a third in late winter to encourage vigorous new growth and the heaviest bloom flush.
Fast Facts
- Blooms continuously spring through frost, no deadheading needed
- Strong resistance to blackspot fungal disease
- Mature size: 3-4 ft tall and wide
- Requires full sun (6+ hours) for best bloom and disease resistance
- Fast growth, self-cleaning flowers
- Not deer resistant; mildly toxic if ingested by pets
Pairs Well With
Knock Out Rose FAQs
Do Knock Out Roses need deadheading?
No, Knock Out Roses are self-cleaning and drop their spent blooms naturally, so deadheading is not required for continuous flowering. This is a major reason they became so popular, offering repeat bloom from spring through frost with far less maintenance than traditional hybrid tea roses.
How much sun do Knock Out Roses need?
Knock Out Roses need at least 6 hours of direct sun daily for the heaviest continuous bloom and strongest resistance to blackspot fungal disease. In part shade they still survive but flower less and become more susceptible to disease in Georgia's humid summers.