Red Knock Out Rose

Knock Out Roses

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  • Zones 5-11
  • Height 3-4 feet
  • Spread 3-4 feet
  • Full Sun

The original award winning Red Knock Out Rose, Rosa ‘Radrazz’, has beautiful red blooms from spring until frost. Foliage emerges reddish, turning dark green as it matures. Fall foliage turns a beautiful deep purple.  Nearly maintenance free- resists black spot.  Easiest and one of the most rewarding roses for your landscape. Perfect for accent, foundation and mass plantings.

Red Knock Out Rose Care

Plant in well-drained soil. Water deeply and regularly to establish and continue watering when soil becomes dry. Mulch to retain moisture and control weeds. Remove spent blooms to encourage repeat blooming. Prune in late winter or early spring.

Red Knock Out Rose Spacing

Plant 5-6 feet apart in the shrub border or in mass plantings.

Red 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 Tall
Spread: 3-4 Feet Wide
Spacing: 3-4 Feet Center on Center
Habit: Bushy
Blooms On: New Wood
Watering: Drought Tolerant
Shrub Type: Deciduous
Scientific Name: Rosa x ‘Radrazz’
Common Name: Red 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.

2 Reviews - Red Knock Out Rose Show Reviews

  • 1
    Mad customer

    Posted by No Flowers! on Oct 13, 2017

    I ordered this to go for a centerpiece at a party I was throwing. I expected it to look like the pictures and be covered in flowers. However, there was only 1 tiny little flower on this bush when I received it. Not happy!

  • 5
    Roses are Red

    Posted by Texas Gardener on Oct 07, 2017

    Order 2 of these plants. I was skeptical because I have never heard of this website before. I was very happy with the quality of each plant when they arrived at my doorstep. A little pricey with shipping costs though.