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Double Knock Out® Shrub Rose
Rosa x 'Radtko' PP #16,202
Pronunciation: ROH-zuh
SKU #03090
A maintenance free rose that continually produces self-cleaning double candy apple red flowers with a slight spicy fragrance. Unsurpassed resistance to black spot and downy mildew leaf diseases. This rounded, bushy, well-behaved shrub creates an excellent low hedge or accent. Deciduous.
LIGHT: Full sun
WATER: Water when top 3 inches of soil is dry.
SIZE: Fast growing; reaches 3 to 4 ft. tall and wide.
Retailers Near You
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Be Inspired: How to Use this Plant
| Bloom Time | Spring through fall |
|---|---|
| Deciduous/Evergreen | Deciduous |
| Special Features | Attracts Butterflies, Easy Care, Improved Pest and Disease Resistance, Non-toxic to Cats and Dogs |
| Growth Rate | Fast |
| Flower Attributes | Fragrant, Long Bloom Season, Repeat Flowering, Showy Flowers |
| Patent Act | Asexual reproduction of plants protected by the Plant Patent Act is prohibited during the life of the patent. |
| Landscape Use | Border, Container, Hedge, Accent |
| Design Ideas | Ideal to integrate into shrub or mixed borders for solid, long-season color without additional care. Makes a fine addition to south and west facing foundation beds. Use in the back of perennial borders to intensify season long color. Plant in irregular groupings for a large scale cover that blocks weeds. Great in pairs to flank an entry, steps or gate. Plant en masse to create a low, semi-formal hedge or to clean up unattractive paving edges around porches and patios. |
| Flower Color | Red |
| Foliage Color | Green |
| Companion Plants | Spruce (Picea); Holly (Ilex); Potentilla (Potentilla); Tickseed (Coreopsis); Phlox (Phlox); Hummingbird Mint (Agastache) |
| Care Instructions | Thrives in enriched, loamy, well-drained soil. Water deeply, regularly in first growing season to establish root system; avoid overhead watering. Feed before new growth begins in spring; repeat mid-season. Mulch to keep roots cool. Prune in late winter or early spring after threat of frost is gone to promote vigorous new growth. |
Details
| Bloom Time | Spring through fall |
|---|---|
| Deciduous/Evergreen | Deciduous |
| Special Features | Attracts Butterflies, Easy Care, Improved Pest and Disease Resistance, Non-toxic to Cats and Dogs |
| Growth Rate | Fast |
| Flower Attributes | Fragrant, Long Bloom Season, Repeat Flowering, Showy Flowers |
| Patent Act | Asexual reproduction of plants protected by the Plant Patent Act is prohibited during the life of the patent. |
Style
| Landscape Use | Border, Container, Hedge, Accent |
|---|---|
| Design Ideas | Ideal to integrate into shrub or mixed borders for solid, long-season color without additional care. Makes a fine addition to south and west facing foundation beds. Use in the back of perennial borders to intensify season long color. Plant in irregular groupings for a large scale cover that blocks weeds. Great in pairs to flank an entry, steps or gate. Plant en masse to create a low, semi-formal hedge or to clean up unattractive paving edges around porches and patios. |
| Flower Color | Red |
| Foliage Color | Green |
| Companion Plants | Spruce (Picea); Holly (Ilex); Potentilla (Potentilla); Tickseed (Coreopsis); Phlox (Phlox); Hummingbird Mint (Agastache) |
Care
| Care Instructions | Thrives in enriched, loamy, well-drained soil. Water deeply, regularly in first growing season to establish root system; avoid overhead watering. Feed before new growth begins in spring; repeat mid-season. Mulch to keep roots cool. Prune in late winter or early spring after threat of frost is gone to promote vigorous new growth. |
|---|
Retailers Near You
No Retailers found within 50 miles of your zipcode
Retailers Near You
No Retailers found within 50 miles of your zipcode
Buy Online
This plant is not available to purchase online.
We no longer grow this plant. For replacement suggestions, check out the plants “You May Also Like” below.
About Us
We have been pioneers and craftsmen in the art of growing plants for nearly
100 years. Since our founding in Southern California by Harry E. Rosedale, Sr.
in 1926, we have been absolutely dedicated and obsessed with quality.
We have been pioneers and craftsmen in the art of growing plants for nearly 100 years. Since our founding in Southern California by Harry E. Rosedale, Sr. in 1926, we have been absolutely dedicated and obsessed with quality.