Knock Out

Knock Out® Red Rose Bush

Ships 1-2 days

Size
$68.00
 
Once a weekFull sunSpring to fall
 
  • Continuous Blooming: Produces rich, red flowers continuously from early spring through fall, significantly longer than traditional rose varieties.
  • Disease Resistance: Exhibits outstanding resistance to common rose diseases, reducing the need for chemical treatments.
  • Self-Cleaning Flowers: Eliminates the need for deadheading, simplifying maintenance and care.
 

More Details

The Knock Out Red Rose Bush, scientifically known as Rosa x 'Radrazz', revolutionized landscape design with its introduction, offering a blend of beauty, resilience, and ease of care unmatched by traditional rose varieties. This deciduous shrub is famed for its vibrant, cherry red blooms that appear from spring until the first frost, providing a long-lasting display of color. The Knock Out Rose is particularly noted for its exceptional disease resistance, including tolerance to black spot and powdery mildew, making it a low-maintenance option for gardeners of all skill levels. Its self-cleaning flowers and adaptability to a range of soil types and conditions make it an ideal choice for borders, mass plantings, or as a standalone specimen, enhancing any garden with its continuous bloom and lush, green foliage.

Growth rate: Moderate growth rate; mature height of 3-4 feet and width of 3-4 feet.

Please note: Images on our website depict plants and trees at full maturity to showcase their expected grown characteristics. These images are illustrative examples only and do not represent the size of plants or trees upon delivery.

Pruning: Prune in late winter or early spring to shape the bush and encourage vigorous new growth. Minimal pruning is needed compared to traditional roses.

Fertilization: Apply a balanced, slow-release fertilizer in early spring to promote healthy foliage and abundant blooms.

Winter Protection: Apply a layer of mulch around the base of the plant to insulate the roots and help retain soil moisture. Consider using a rose cone or wrapping the bush with burlap to protect it from harsh winter conditions.


Choose a location with full sun and well-draining soil. Dig a hole as deep and twice as wide as the root ball. Plant the rose bush, backfill with soil, and water thoroughly. Space plants 3-4 feet apart to allow for air circulation and mature spread.

Water regularly during the first growing season to establish a deep, extensive root system; once established, it becomes drought-tolerant, requiring only occasional watering. Prefers full sun for the best flowering performance and disease resistance.

Every product typically ships in 1-2 days. You will receive a shipping confirmation with your tracking number once your item(s) ship.

We have perfected packaging and shipping plants & trees! That is why we DO NOT use any third-party fulfillment like most other online retailers. Your trees go straight from our farm to your door, safely packaged by our team of seasoned professionals. Our process ensures your plants leave our facility and arrive to your door in the best condition possible!

In cases of extreme cold or hot weather, we may temporarily delay shipping to ensure the well-being of your plants. Our primary focus is on delivering healthy and thriving plants to you. Rest assured, we'll make every effort to notify you of any delays promptly.

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At Simply Trees, we're committed to your satisfaction. If your plants arrive considerably damaged or sustained damage beyond the point of recovery, please contact us within five days at sales@simplytrees.store with clear photos for assistance. Our 30-day guarantee covers issues after planting, subject to our terms and conditions. We can't cover plants in the wrong climate or with inadequate care, but we're here to help in other situations. For a detailed understanding of our 30-day guarantee and how we ensure a fair process, click here to learn more.

USDA GROW ZONE:

Zones 5-11

The Knock Out Red Rose Bush is adaptable to USDA Zones 5-11, demonstrating its versatility and hardiness across a wide range of climates. It thrives in well-drained soil and requires at least six hours of direct sunlight daily to ensure robust growth and optimal flowering.

Frequently Asked Questions

The Knock Out Rose bush is known for its compact and bushy growth habit, typically reaching a mature size of around 3 to 4 feet in both height and spread. However, the size can vary depending on factors such as growing conditions, climate, and pruning practices. With its moderate size, the Knock Out Rose bush is well-suited for various garden settings, including flower beds, borders, and containers. Its manageable size makes it easy to incorporate into landscapes while still providing abundant blooms and vibrant foliage throughout the growing season.

The Knock Out Rose bush is known for its vigorous growth rate, typically averaging around 2 feet in height and spread per year under optimal growing conditions. However, growth rates may vary depending on factors such as climate, soil quality, watering frequency, and pruning practices. With its fast growth rate, the Knock Out Rose bush can quickly establish itself in the landscape, providing beautiful blooms and vibrant foliage throughout the growing season. Regular maintenance, including pruning and fertilizing, can help promote healthy growth and ensure the best performance from your Knock Out Rose bush.

The Knock Out Rose bush thrives in locations that receive full sun or partial shade. When selecting a planting site, choose an area with well-draining soil to prevent waterlogging. Additionally, ensure adequate air circulation around the plant to minimize the risk of fungal diseases. Ideal locations include garden beds, borders, or containers on patios or decks, providing they receive sufficient sunlight. By planting in a suitable location, you can help your Knock Out Rose bush flourish and produce an abundance of vibrant blooms throughout the growing season.

Knock Out Roses are renowned for their prolific and continuous blooming throughout the growing season. Under optimal conditions, they can bloom from spring until the first frost of fall, providing an extended display of colorful flowers in the garden. This extended blooming period is one of the key attributes that make Knock Out Roses popular among gardeners, as it ensures a vibrant and long-lasting floral show. Additionally, deadheading spent blooms can encourage the plant to produce even more flowers, prolonging the blooming season further.

The Knock Out Rose bush is renowned for several special characteristics that make it a favorite among gardeners:

Continuous Blooms: One of the most distinctive features of the Knock Out Rose is its ability to produce an abundance of colorful blooms continuously throughout the growing season, from spring until the first frost of fall. This extended flowering period ensures a vibrant display of color in the garden for several months.

Low Maintenance: Knock Out Roses are prized for their low-maintenance nature. They are highly disease-resistant, particularly to common rose ailments like black spot and powdery mildew. This makes them ideal for gardeners who want to enjoy the beauty of roses without the need for extensive care and chemical treatments.

Hardiness: These roses are exceptionally hardy and can thrive in a wide range of climates, from hot and humid to cold and snowy. They are also tolerant of various soil types, including clay and sandy soils, making them adaptable to different garden conditions.

Drought Tolerance: Knock Out Roses exhibit excellent drought tolerance once established, making them suitable for gardens where water conservation is a concern. While they benefit from regular watering, they can withstand periods of dryness without sacrificing their overall health and vigor.

Versatility: With their compact growth habit and prolific blooms, Knock Out Roses are versatile plants that can be used in various landscaping applications. They work well as specimen plants, in mass plantings, as borders, or in containers, adding beauty and color to any garden setting.

Vibrant Colors: Available in a range of vibrant colors, including red, pink, coral, and yellow, Knock Out Roses offer options to suit any garden color scheme or preference. Their eye-catching blooms add visual interest and curb appeal to outdoor spaces.

Overall, the Knock Out Rose bush stands out for its exceptional performance, beauty, and ease of care, making it a beloved choice for gardens of all sizes and styles.

Yes, pruning Knock Out Roses annually is recommended to maintain their health, shape, and vigor. Here's why:

Encourages New Growth: Pruning stimulates the growth of new shoots and encourages the development of strong, healthy branches. This results in a bushier, more attractive plant with an abundance of blooms.

Removes Dead or Diseased Wood: Regular pruning allows you to remove any dead, damaged, or diseased wood from the plant. This helps prevent the spread of diseases and promotes overall plant health.

Controls Size and Shape: Knock Out Roses can become leggy or overgrown if left unpruned. Annual pruning helps control their size and shape, ensuring a more compact and aesthetically pleasing appearance.

Promotes Flowering: Pruning encourages the production of new flowering wood, which leads to more abundant blooms. Removing spent flowers also encourages the plant to continue blooming throughout the growing season.

Improves Air Circulation: Thinning out crowded or crossing branches improves air circulation within the plant, reducing the risk of fungal diseases and promoting better overall health.

When pruning Knock Out Roses, it's best to do so in early spring before new growth begins. Remove any dead, damaged, or crossing branches, and selectively prune back longer stems to promote branching and denser growth. Additionally, deadheading spent flowers throughout the growing season will help maintain continuous blooming.

By pruning your Knock Out Roses annually, you can ensure they remain healthy, vibrant, and full of beautiful blooms year after year.

To encourage bushier growth in your Knock Out Roses, you can follow these steps:

Pruning: Regular pruning is essential for promoting bushier growth in Knock Out Roses. Prune your roses in early spring before new growth begins. Remove any dead, diseased, or damaged wood, as well as any weak or crossing branches. Additionally, selectively prune back longer stems to encourage branching and denser growth. Make clean cuts just above outward-facing buds to direct new growth outward.

Pinching: Pinching involves removing the tips of young shoots or stems to encourage branching and stimulate the growth of lateral shoots. Use your fingers or pruning shears to pinch or snip off the tips of new growth when the stems are still young and flexible. Pinching can be done throughout the growing season, especially during the early stages of growth.

Deadheading: Remove spent flowers promptly by cutting them back to a leaf node or a set of healthy leaves. Deadheading not only improves the appearance of the plant but also redirects energy into producing new growth and additional blooms.

Fertilizing: Apply a balanced fertilizer formulated for roses in early spring as new growth begins. Follow the manufacturer's instructions regarding application rates and frequency. Fertilizing provides essential nutrients that support healthy growth and flowering.

Mulching: Apply a layer of organic mulch, such as shredded bark or compost, around the base of the rose bush. Mulching helps conserve soil moisture, suppresses weed growth, and regulates soil temperature, creating optimal conditions for root development and overall plant health.

Watering: Ensure your Knock Out Roses receive adequate water, especially during dry periods. Consistent watering promotes healthy growth and prevents stress, which can inhibit branching and overall vigor.

Sunlight: Ensure your roses receive sufficient sunlight to support vigorous growth and flowering. Knock Out Roses thrive in full sun, ideally receiving at least six to eight hours of direct sunlight per day.

By implementing these practices, you can encourage bushier growth and enhance the overall appearance of your Knock Out Roses, resulting in a fuller, more abundant display of blooms.

Watering frequency for Knock Out Roses depends on various factors such as climate, soil type, and weather conditions. However, here are some general guidelines to help you determine how often to water your Knock Out Roses:

Established Plants: Once established, Knock Out Roses are relatively drought-tolerant and require less frequent watering. Water deeply, allowing the soil to dry out slightly between waterings. Typically, watering once or twice a week during the growing season should be sufficient.

Weather Conditions: Adjust your watering frequency based on weather conditions. During hot, dry periods, you may need to water more frequently to prevent the soil from drying out completely. Conversely, reduce watering during cooler or rainy periods to avoid waterlogged soil.

Soil Moisture: Check the moisture level of the soil regularly by inserting your finger into the soil near the base of the plants. If the soil feels dry to the touch about an inch below the surface, it's time to water. Avoid watering if the soil feels moist.

Deep Watering: When watering Knock Out Roses, aim to provide deep, thorough irrigation rather than frequent shallow waterings. Deep watering encourages the development of deep roots and helps the plants withstand drought conditions better.

Morning Watering: Water your Knock Out Roses in the morning to allow foliage to dry before evening. Wet foliage overnight can increase the risk of fungal diseases such as powdery mildew.

Mulching: Apply a layer of organic mulch around the base of the plants to help retain soil moisture and reduce water evaporation from the soil surface. Mulching also helps suppress weed growth and regulates soil temperature.

Container-Grown Roses: If growing Knock Out Roses in containers, check the moisture level of the potting mix regularly, as containers tend to dry out faster than garden beds. Water thoroughly when the top inch of the potting mix feels dry.

By following these watering guidelines and monitoring the moisture needs of your Knock Out Roses, you can help ensure healthy growth and vibrant blooms throughout the growing season. Adjust your watering practices as needed based on the specific requirements of your plants and local growing conditions.

Winterizing Knock Out Rose bushes is essential to protect them from the harsh conditions of winter and ensure they thrive in the following growing season. Here's how to winterize your Knock Out Roses:

Prune: Before the first frost, lightly prune your Knock Out Rose bushes to remove any dead, damaged, or crossing branches. Cut back the branches by about one-third to prevent wind damage during winter storms.

Mulch: Apply a thick layer of mulch around the base of the plants to insulate the roots and protect them from freezing temperatures. Use organic materials such as shredded bark, straw, or compost, and spread the mulch in a layer about 2-3 inches deep.

Water: Hydrate your Knock Out Rose bushes thoroughly before the ground freezes. Deep watering helps the plants withstand winter drought and prevents dehydration during cold, dry periods.

Protective Covering: In regions with extremely cold temperatures, consider providing additional protection by covering the base of the plants with burlap or frost cloth. This can help shield the plants from freezing winds and temperature fluctuations.

Avoid Fertilizing: Refrain from fertilizing your Knock Out Roses in late fall or winter, as it can stimulate new growth that may be susceptible to frost damage. Resume fertilizing in early spring when new growth emerges.

Monitor Moisture: Throughout the winter months, periodically check the moisture levels around your Knock Out Rose bushes. Water them sparingly during dry spells to prevent the roots from drying out, but avoid overwatering, as soggy soil can lead to root rot.

Remove Snow Buildup: If heavy snow accumulates on the branches of your Knock Out Roses, gently brush it off to prevent the weight from causing the branches to bend or break.

Monitor for Pests and Diseases: Keep an eye out for signs of pests or diseases, such as aphids, scale insects, or powdery mildew, which may still be active during winter. Treat any infestations promptly to prevent them from causing damage.

By following these winterization tips, you can help your Knock Out Rose bushes survive the winter months and ensure they emerge healthy and vigorous when spring arrives.

Planting Knock Out Rose bushes is a straightforward process that can be summarized in a few simple steps:

Choose the Right Location: Select a spot in your garden that receives at least 6 hours of sunlight daily and has well-draining soil. Knock Out Roses prefer full sun but can tolerate partial shade.

Prepare the Soil: Ensure the soil is loose, well-draining, and rich in organic matter. If the soil is heavy or compacted, consider amending it with compost to improve drainage and fertility.

Dig a Hole: Dig a hole that is twice as wide and slightly deeper than the root ball of the Knock Out Rose bush.

Remove the Plant from the Container: Gently remove the Knock Out Rose bush from its container, taking care not to damage the roots.

Loosen the Roots: If the roots are tightly packed, gently loosen them with your fingers to encourage outward growth.

Place the Plant in the Hole: Position the Knock Out Rose bush in the center of the hole, making sure the top of the root ball is level with the surrounding soil.

Backfill the Hole: Fill the hole with soil, pressing it down gently as you go to remove any air pockets. Water the plant thoroughly to settle the soil.

Mulch and Water: Apply a layer of mulch around the base of the plant to help retain moisture and suppress weeds. Water the newly planted Knock Out Rose bush deeply to promote root establishment.

Monitor and Maintain: Keep an eye on your Knock Out Rose bush, ensuring it receives adequate water during the growing season. Consider applying a balanced fertilizer formulated for roses to encourage healthy growth and blooming.

By following these steps, you can successfully plant Knock Out Rose bushes in your garden and enjoy their beautiful blooms throughout the growing season.

Our Process

We have perfected packaging and shipping plants & trees! That is why we DO NOT use any third-party fulfillment like most other online retailers. Your trees go straight from our farm to your door, safely packaged by our team of seasoned professionals. Our process ensures your plants leave our facility and arrive to your door in the best condition possible!