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Knock Out® Orange Glow™ Shrub Rose

Rosa ‘Radslam’ PP35,826

Regular price $6318
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Plant Sentry™

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Delivery and Shipping

Delivery and Shipping

Fast, Safe Plant Delivery
Ships in 3-4 business days • Tracking provided • Weather protected

Under $50 $9.99
$50 - $99.99 $14.99
$100 - $149.99 $16.99
$150 - $198.99 $24.99
$199+ FREE

✓ Zone-specific timing • ✓ Professional packaging • ✓ Health guarantee

Plant Profile & Growing Essentials

Cold hardy, Low Maintenance, Flowering, Reblooming, Disease resistant, Heat Tolerant, Drought resistant, Attracts pollinators, and Container Friendly

Specifications

  • Botanical Name
    Rosa ‘Radslam’ PP35,826
  • Height
    3-5 ft
  • Width
    3 ft
  • Growing Zones
    4-11
  • Sunlight
    • Full sun
  • Growth Rate
    Moderate
  • Flower Color
    • Orange
  • Leaf Color
    • Green
  • Pollinator Friendly
    Yes
  • Bloom Period
    Late Spring, Early Summer, Late Summer, Early Fall, Late Fall
  • Does Not Ship To
    AK, HI, ID, MT, OR

Planting & Care Instructions

Where to Plant

  • Sunlight: Your Knock Out needs at least six hours of direct sunlight daily for best performance. While four hours of sun allows survival, the tradeoff will be fewer blooms and a noticeably paler orange color compared to full sun placement.
  • Soil: Roses thrive in rich, well-draining soil with plenty of organic matter. For heavy clay, mix in generous amounts of compost or aged manure to improve porosity; for sandy soil, the same amendments will help retain the necessary moisture and nutrients.

Watering Requirements

For the first growing season, water deeply two to three times per week to help your shrub establish a strong, deep root system. Once mature, this rose is quite drought tolerant, but you should aim for one inch of water per week for continuous, abundant blooms. Inconsistent watering during dry heat will result in smaller flower heads and can make the plant vulnerable to stress.

Pruning Tips

This type of shrub rose blooms reliably on new wood, meaning the flower buds form on the current season's growth. The best time to prune is in early spring just as the buds begin to swell. Simply cut all canes back by about one-third to one-half their height; this shape correction encourages a dense, attractive shrub form and improves air circulation, which is key to maintaining its famous disease resistance.

Fertilizer Needs

Apply a quality, slow-release granular fertilizer formulated for roses, such as a balanced 10-10-10, just after the spring pruning. A second application in mid-summer will help fuel the heavy reblooming cycle. Avoid any high-nitrogen feedings after August 1st, as this encourages soft, new growth that will not have enough time to harden off before winter frost, inviting cold-weather damage.

Knock Out® Orange Glow™ Rose

Get your glow on! The Knock Out® Orange Glow™ Rose PP#35,826 (Rosa 'Radslam') is a show-stopping, everblooming Shrub Rose with fiery orange blossoms that seem to glow in the garden! This new addition to the Knock Out® family is just as low-maintenance, disease-resistant, and floriferous as its predecessors, but with an exciting new color twist.

The warm orange petals transition into sunset hues, making this shrub a standout in any landscape. Plus, it reblooms continuously from late spring to frost, ensuring non-stop color and delightfully soft fragrance throughout the season.

Its deep green foliage stays clean and lush, thanks to its superior resistance to black spot, powdery mildew, and rust. In the fall, the foliage takes on golden hues, adding another layer of seasonal interest before winter dormancy!

Like all Knock Out® Roses, Orange Glow™ thrives in Zones 4-11, tolerating cold, heat, humidity, and urban pollution with ease. It flourishes in full sun and well-drained soil, adapting to various conditions while requiring minimal care. Whether you're a beginner gardener or a seasoned rosarian, this brilliant bloomer delivers vibrant color without the fuss!

Key Features

  • Glowing orange blooms with sunset undertones
  • Reblooming from late spring to frost
  • Compact, rounded form (3-5 feet tall and wide)
  • Disease-resistant and low-maintenance
  • Heat and humidity-tolerant
  • Lush green foliage with a golden fall color
  • Self-cleaning
  • Widely adaptable!

Landscaping Uses

Compact and bushy, this rounded Rose shrub reaches 3-5 feet tall and wide, making it perfect for sun gardens of all sizes. The Knock Out® Orange Glow™ Rose is a compact, floriferous shrub ideal for brightening up any garden space. Its manageable size and prolific blooms make it a versatile choice for various landscape designs.

  • Stunning focal point in foundation plantings
  • Eye-catching border or mass planting
  • Mixed into perennial gardens for season-long color
  • Thrives in large containers for patios and balconies
  • Used as a colorful low hedge along pathways or fences
  • Nectar and pollen-rich resource for Bees, Butterflies, and other beneficial insects
  • Defensive plantings and hedges - In addition to its beauty, the naturally thorny stems make it an excellent choice for defensive barriers, helping to deter trespassers—both the two-legged and four-legged kind—while still providing a glowing display.

Care and Maintenance

As a deciduous, shrub-form Rose, Knock Out® Orange Glow™ is easy to grow and requires minimal maintenance while delivering maximum impact.

  • Planting Time: Spring or fall for the best establishment
  • Sun Needs: Full sun (at least 6 hours of direct sunlight), preferring the drying power of the morning sun for the healthiest foliage
  • Soil Needs: Well-drained, loamy soil; tolerates various soil types as long as they are not soggy or compacted
  • Moisture Needs: Moderate regular moisture but not soggy; water deeply in dry spells
  • Mulch: Apply a 3-4 inch layer of mulch, shredded bark, or compost to retain moisture and regulate soil temperature
  • Fertilization Needs: Feed with a balanced Rose fertilizer in early spring and midsummer for best blooms
  • Pruning Info: Prune Roses in early spring to shape and encourage fresh growth; blooms on new wood
  • Renewal Pruning: Cut back by one-third every few years to rejuvenate the plant
  • Special Needs/Perks:
    • Deer seldom bother these thorny shrubs unless desperate
    • Disease-resistant
    • Self-cleaning (no deadheading required)
    • Drought-tolerant once established

A Glowing Addition To Your Garden

The Knock Out® Orange Glow™ Rose lives up to its name, delivering an eye-catching glow that lasts all season long. Whether planted en masse, as a border, or in a container, this resilient and radiant Rose will brighten your landscape with ease.

Order yours now from Nature Hills Nursery and enjoy a garden filled with glowing orange blooms all season long!

Frequently Asked Questions

Do Knock Out® Orange Glow™ Roses require deadheading?
No! Like all Knock Out® Roses, Orange Glow™ is self-cleaning, meaning spent blooms drop off on their own, encouraging continuous flowering.

How much sun does the Knock Out® Orange Glow™ Rose need?
This Rose thrives in full sun, requiring at least 6 hours of direct sunlight per day for optimal blooming.

Is the Knock Out® Orange Glow™ Rose resistant to disease?
Yes, it has excellent resistance to common Rose diseases like black spot, powdery mildew, and rust, making it incredibly low-maintenance.

Can I grow Knock Out® Orange Glow™ Rose in a container?
Absolutely! This compact, rounded shrub performs well in large containers, as long as it has proper drainage and full sun exposure.

How cold-hardy is the Knock Out® Orange Glow™ Rose?
It is hardy in Zones 4-11 and can tolerate a range of climates, including heat and humidity. In colder regions, applying mulch around the base in winter can help protect the roots.

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