Double Red Knockout Rose is a low maintenance shrub with stunning deep red rounded flowers and purplish green foliage. It is disease and heat resistant once established. It is a long bloomer, with repeat blooms from spring to frost. Its vibrant red double blooms are 3 inches across and produce up to 24 petals.
Double Red Knockout is compact in size growing 3-4 feet high and wide, making it a perfect choice as a feature shrub, mass planting in a border, or low-growing groupings under windows. It attracts pollinators and has a subtle spicy scent. It is non-toxic and produces orange-red hips in the fall that are edible and perfect for tea. Double Red Knockout Rose is a versatile and easy-to-grow choice that fills the garden with vibrant reds all summer.
Care
Double Red Knockout Rose enjoys full to partial sun, needing at least 6-8 hours per day. The more sun it receives, the richer its blooms will be. Plant in moist but well drained soil and water when the top 3 inches of the soil becomes dry. Double Red Knockout Rose grows best in chalky, loam soils with neutral ph levels.
When planting, dig a hole to the same depth and twice as wide as the original container. When planting in groups, space each shrub at least 3 feet apart to allow for root growth. If planting in containers, choose a container twice as large as the original container. If transplanting, the best time is while the plant is dormant in late winter or early spring.
Water consistently and avoid overhead watering. Water deeply at the roots to encourage root development. Add a layer of mulch around the base 2-3 inches thick to keep roots cool and moist.
Double Red Knockout Rose does not require much fertilizing; however, you can use a balanced SR-18-5-10 slow-release fertilizer to give it a boost. When fertilizing, be sure you wait until after the plant has been established, generally after the first flush of blooms. Ensure that the soil is moist before adding fertilizer to not burn up the roots. Avoid fertilizing in later summer to allow the plant to prepare to become dormant. Feed the plant before new growth begins and then again in midseason.
Uses in the Landscape
As a compact shrub, Double Red Knockout Rose is perfect for small spaces or used as hedges along walkways. It is great in containers as well. Plant in small beds as the focal plant or use around borders of larger beds. It is an excellent choice to plant in mass or use as a backdrop for other perennials. Plant the shrub along entry ways as an accent to add curb appeal to the landscape. Double Red Knockout Rose is nontoxic, low maintenance and easy to grow. It grows in zones 4-9 is disease and heat resistant and is perfect for attracting butterflies.
Companion Plants
Little Kitten Dwarf Maiden Grass is a small grass growing only 12-15 inches high making it the perfect complement to fill in front of Double Red Knockout Rose. It is a great choice to use as a living mulch to protect the shrubs' roots keeping them cool. It has silvery-green foliage providing a great contrast to the deep red blooms of Double Red Knockout Rose.
August Beauty Gardenia is a beautiful creamy white shrub that offers a contrast of color and style. This shrub grows 4-6 feet tall offering some height without overpowering the Rose and is great at attracting pollinators. It enjoys similar growing conditions as Double Red Knockout Rose making it easy to incorporate into the same landscape.
Ordering
Our processing time usually is 1-3 days after receiving the order. Orders taken after 4:00 pm on Wednesday through Sunday will be shipped the following Monday.
Shipping:
The Plant Factory, Inc. offers the very best shipping processes to ensure quick, safe, and near-perfect results every time. Cold and heat may deter your order temporarily until it is safe to receive and plant your plants/trees in your area. At our discretion, we will hold order until the threat is gone, ensuring you with the healthiest and most viable product ordered: Summer- Above 95 degrees | Winter- Below 34 degrees.
Plant Highlights
- Growing Zone: 4-9
- Plant Brand: The Plant Factory Choice
- Botanical Name: Rosa ‘RADtko’
- Foliage Color: Green
- Flower Color: Red
- Flower Size: 3 Inches
- Flower Fragrance: Slightly Spicy
- Fall Color: Burgundy, Purple
- Type: Deciduous
- Mature Height: 3-4 Feet
- Mature Width: 3-4 Feet
- Growth Rate: Fast
- Exposure: Full Sun, Partial Shade
- Soil Needs: Well Drained
- Water Needs: Moderate
- Pruning Needs: Early Spring, no need to deadhead, prune by 1/3
- Awards:
- Grown by: The Plant Factory
- Pollinator Friendly: Yes
- Deer Resistant: No
- Pet Friendly: No
- Reblooming: Yes
- Cold and Heat Tolerant: Yes
Note: We put pictures and videos on our site to best represent our products, as an example of our quality as a grower. You may, however, receive a smaller or larger plant than pictured, depending on the season you buy. You may or may not get a plant blooming as shown on our site. We usually trim off blooms because they do not ship well. Your purchase of our plants should be considered an investment in your future garden to enjoy growing to its full potential.
Why The Plant Factory, Inc is a good choice?
Our plants are grown at our nursery. Our experienced staff use the best horticultural practices to ensure our plants are of the utmost health and quality. We select your plants as if we were buying them ourselves. Our standard goals are to exceed our customers’ expectations. We pride ourselves for great “out of the box” experiences with hassle-free customer service and quick resolutions.
