Red Double Knock Out Rose

Knock Out Roses

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  • USDA 5-11
  • Height: 3 to 4 feet
  • Width: 3 to 4 feet
  • Full sun

Double Knock Out Red Rose - Rosa x 'Radtko' PP #16202 – is a maintenance free rose that will stun from spring until late fall. Vivid red double roses are self-cleaning, so no deadheading is required to maintain blooming. Resistant to black spot and downy mildew, this shrub rose is perfect for landscapes as a hedge or an accent.

Double Knock Out Red Rose Care

Plant this shrub rose in well-drained soil and provide fertilizer in the early spring for best results. Mulch in the fall to protect the roots during winter. Prune in the early spring to maintain shape.

Double Knock Out Red Rose Spacing

For a dense hedge, plant these shrub roses between 3 and 4 feet on-center. For a mass planting or informal hedge, space plants at least 5 feet center-to-center. 

Red Double Knock Out Rose Plant Facts

USDA Hardiness Zones: 5-11
Flower Color(s): Cherry Red
Bloom Period: Spring to First Frost
Foliage Color(s): Deep Purplish Green
Exposure: Full Sun
Height: 3-4 Feet
Spread: 3-4 Feet
Spacing: 3-4 Feet Center on Center
Habit: Bushy
Blooms On: New Wood
Watering: Drought Tolerant
Shrub Type: Deciduous
Scientific Name: Rosa x 'Radtko'
Common Name: Red Double Knock Out Rose
Brand: Knock Out Roses

Container Sizes

Please Note: The pictures below are to give a general representation of the different container sizes. The actual size/ages of plants are estimates and will vary based on; type of plant, time of year, last pruning & many other factors.

4.5 Pot

4.5" Pot
 Also Know As:
   4.5" Container

 Plant Age:
   ~ 6 months
 Plant Size:
   ~ 3"-6"
 Pot Size:
   ~ 4.5"H x 3.75"W
   1.42 quarts

Quart Pot

Quart Pot
 Also Know As:

 Plant Age:
   ~ 1 year old
 Plant Size:
   ~ 4"-8"
 Pot Size:
   ~ 4.75"H x 4.5"W
   1.50 quarts

2.5 Quart

2.5 Quart
 Also Know As:
   2.5 Quart Pot

 Plant Age:
   ~ 1.5 year old
 Plant Size:
   ~ 8"-12"
 Pot Size:
   ~ 6.5"H x 6.5"W
   2.20-2.30 quarts

#1 Pot

#1 Pot
 Also Know As:
   #1 Container
    1 Gallon
 Plant Age:
   ~ 2 year old
 Plant Size:
   ~ 10"-14"
 Pot Size:
   ~ 7"H x 7.75"W
   2.26-3.73 quarts

#2 Pot

#2 Pot
 Also Know As:
   #2 Container
    2 Gallon
 Plant Age:
   ~ 2-3 year old
 Plant Size:
   ~ 12"-18"
 Pot Size:
   ~ 9.5"H x 9.5"W
   1.19-1.76 gallons

#3 Pot

#3 Pot
 Also Know As:
   #3 Container
    3 Gallon
 Plant Age:
   ~ 3-4 year old
 Plant Size:
   ~ 12"-30"
 Pot Size:
   ~9.5"H x 11"W
   2.32-2.76 gallons

For more detailed information, please click here.

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.

6 Reviews - Red Double Knock Out Rose Show Reviews

  • 5
    Beautiful Red Double Knock Out...

    Posted by Nancy Crocker on May 17, 2022

    These small roses are gorgeous and smell delightful! They bloomed as soon as I received them! Stems long enough to put in bouquets with larger flowers. I LOVE THEM!!!

  • 5
    The rose bush has already bloomed ... Not happy...

    Posted by Debra McCormick on Aug 29, 2021

    The rose bush has already bloomed ... Not happy about the rest of my order we will see i bought 3 Hydrengas and I butterfly bush but i love the way you shipped the order better then other companys i ordered from thank you

  • 3
    Roses Arrive with Very Long...

    Posted by Sharon Blalack on Aug 02, 2021

    The canes should have been cut back before shipping as it made it nearly impossible to remove the pots from the special box. The roses look fair and I will not know anything about their health until I get them planted and they start new growth.

  • 5

    Posted by Kindle Customer on May 03, 2021

    They are looking very well in Texas Soil

  • 4
    overall good plant

    Posted by Cait Stodolka on Mar 24, 2019

    I was a little disappointed with the size of the plant when it arrived. But it was in really good condition, much better than anything you could find at big stores. Looks like it will be full of flowers this year, I can't wait!

  • 5
    Rose review

    Posted by Paul on Oct 24, 2017

    Happy with my purchase. Came to my house fast and the 4 plants I ordered were really healthy. They are doing great in my backyard right now!