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Rainbow Knock Out® Rose

Knock Out Roses

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  • Full Sun (At Least 6 Hours Of Direct Sunlight)
  • Mature Height 2 - 3 Feet
  • Mature Spread 2 - 3 Feet
  • Growing Zones 5 - 8

Looking for a rose with unique coloring but with a fraction of the care requirements of traditional roses? You have found a candidate: the Rainbow Knock Out Rose. This rose boasts massive amounts of single flowers in coral, pink, and cream shades that bloom across a long season. A former All-America Rose Selection, the Rainbow Knock Out offers excellent disease resistance and attractive foliage.

A low maintenance requirement is the most outstanding feature of the Knock Out family of roses. This shrub lacks the strong fragrance of other roses and its blooms have a fairly short vase-life, but it can be treated as an easy flowering shrub. It has resistance to powdery mildew and black spot and is self-cleaning and drought tolerant, making it a great plant for a range of climates and sites. It is hardy and heat/humidity tolerant from USDA zones 5 to 8.

Rainbow Knock Out Rose Care

Rainbow Knock Out roses require ample light, with at least 6 to 8 hours of sunlight daily. These shrubs prefer a well-drained soil with a pH between 6.0 and 6.5. After planting, water the roses whenever rainfall is insufficient to encourage establishment. A 3-inch layer of mulch around the plant helps to retain soil moisture and suppress competitive weeds.

Do any pruning to maintain a smaller size or adjust the shape while the shrub is dormant in late winter or early spring. This timing will ensure that flowering is not affected. It is possible to grow Rainbow Knock Out roses in a container. A container must have a volume of at least 10 or 15 gallons, have ample drainage, and be heavy enough that no issues will arise when the shrub grows and becomes more top-heavy. Specimens in containers will require more frequent watering than their counterparts grown in the ground, especially during hot, dry weather.

Rainbow Knock Out Rose Spacing

Adequate spacing is necessary to ensure that Rainbow Knock Out will maintain the best shape with minimal pruning. These shrubs grow at least 2 to 3 feet high and 3 to 4 feet wide, so space plants accordingly. Good air flow around the plants will also bring out the best performance from this rose.

Rainbow Knock Out® Rose Information

USDA Hardiness Zones: 5 - 8
Plant Type: Bushes
Light Exposure: Full Sun (At Least 6 Hours Of Direct Sunlight)
Mature Height: 2 - 3 Feet
Mature Spread: 3 - 4 Feet
Spacing: 3 - 4 Feet
Habit: Upright
Flower Color(s): Pink, White, Yellow
Flower Description:
Bloom Period:
Foliage Type: Deciduous
Foliage Color(s): Green
Foliage Description:
Seasonal Interest: Spring Flowering, Summer Flowering, Fall Flowering
Watering: Average
Resists: Disease
Tolerates: Heat, Drought
Attracts: Bees, Butterflies
Container Role:
Uses: Borders, Containers, Mass Planting, Wildlife Gardens
Features: Attracts Pollinators, Low Maintenance
Common Name: Rainbow Knock Out® Rose
Other Name(s):

Click here for more information on plant container sizes.

Plant Addict Guarantee (Included On All Plant Orders)

Plant Addicts guarantees your plant(s) will arrive happy and healthy, but the plant(s) are being shipped through the mail and accidents happen. If the plant is dead, has dried out roots or the incorrect item was shipped just notify Plant Addicts within 3 days upon delivery. We may ask for pictures but will try to make it as easy as possible for you. Please note plant(s) with damaged branches or wilted leaves will not qualify for this guarantee. Plants are very resilient and will rebound quickly when cared for correctly.

For information on how to care for you new plant please check out our guide. Guide: How to Care for Your New Plant(s)

Plant Addicts Warranty - 1 Year (Extra Purchase Required)

We encourage all plant lovers to purchase the Plant Addicts Warranty whether you’re new or an expert. There are many variables outside our control and yours that can cause the demise of your plant(s). Examples would be hungry animals, drought, poor soil conditions, over watering, disease, insects & many other factors. The Plant Addicts Warranty is a 1 year warranty protecting you from all the unknowns and will replace your plant if it moves on to the plant afterlife.

The warranty is purchased on a per plant basis and must be purchased at the same time as the plant purchase. We will cover 100% of the price of the plant but the warranty does not cover shipping cost. Simply let us know if your plant has died within one year of receiving it and we’ll get you a new one shipped out. We may ask for photos for documentation purposes but again we’ll try to make it as easy as possible.

For more information, please go to our Shipping & Returns page at the bottom of the website.

Guide: How to Care for Your New Plant(s)

Planter Shipping

Standard Colors: 2-3 business days

Special Order Colors: 8 weeks - this is due to the planter being custom made with the color(s) of your choice

Please Note: On special orders there can not be any cancellations

Plant Shipping

Time of Order:

Summer Shipping

  • If there is extreme heat we’ll delay shipping.  
    • We’ll have to review what areas the plants are traveling through along with your location

Once your plant is shipped you’ll receive an email with tracking information. Depending on the above criteria we’ll ship your plant(s) towards beginning of the following week from your order. We put together this helpful guide of what to do when you receive your plants in the mail.

It is important to know that all of our plants are clearly labeled for which growing zones the plant can survive in. The plants are thoroughly trialed and tested in every growing zone before we state the plant can grow in a zone. Again, our #1 priority is to ship the plants to you healthy and ready to thrive in your location. So we will do everything in our power to do so.