This product does not ship to:
AZ, CA, ID, MT, NV, OR, UT, WA

White Knock Out® Rose

$53.49
(No reviews yet) Write a Review
SKU:
1231007451-pc
Availability : In Stock
Spring 2023 Pre-Order - Learn More
$53.49
This product does not ship to:
AZ, CA, ID, MT, NV, OR, UT, WA
  • Partial Sun to Full Sun (At Least 5 Hours of Direct Sunlight)
  • Mature Height 3 - 4 Feet
  • Mature Spread 3 - 4 Feet
  • Growing Zones 4 - 10
  • Use As A Thriller In Containers

For a low-maintenance and compact flowering shrub, it is hard to beat a Knock Out® Rose. The White Knock Out® Rose brings all the elegance and beauty of a white rose without the muss and fuss of rose growing. Extremely disease resistant and petite in size, the White Knock® Out is sure to liven up your garden with its soft white petals and gold stamens. The nearly black leaves allow those bright white blooms to really stand out and make a statement! This Knock Out® rose blooms from May to October, giving your garden a consistent beauty and attracting swarms of butterflies and bees. 

The White Knock Out® Rose grows to be 3-4 feet tall and wide, making it a great fit for gardens of any size. Knock Out® Roses are bred specifically to be more disease resistant than the average rose, allowing them to be more low maintenance for the average gardener. This hardy rose has a slight citrusy scent and is a great addition to a cut-flower garden. 

White Knock Out® Rose Care

The White Knock Out® Rose tends to bloom and grow best when provided with full sun and regular deep watering, especially in hotter and drier periods. Knock Out® Roses can be planted in neutral, well-draining soil. To plant it, dig a hole that is twice the width and of equal depth as the root ball. If the soil is sandy or clay, amend with compost or soil conditioner to ensure adequate drainage. In the spring, feed the White Knock Out® Rose with a balanced fertilizer formulated for roses.

To maintain the size and shape of a Knock Out® Rose, cut it back to about 12 inches in late winter or early spring. Remove dead or damaged wood at any point in the year to reduce the risk of disease and improve air flow. When watering, avoid wetting the leaves to prevent foliar infections. Spent blooms and rose hips can be removed as well to improve the look of the bush and encourage additional blooming. 

White Knock Out® Rose Spacing

Plant the White Knock Out® Rose 4 to 6 feet away from other plants to allow for room to grow. When planting as a hedge or en masse, Knock Out® Roses can be planted slightly closer together. The White Knock Out® Rose can be kept in a container that is at least twice the size of the root ball with adequate drainage, though it is important to place the container in a protected spot during the winter to prevent root damage. 

White Knock Out® Rose Information

USDA Hardiness Zones: 4 - 10
Plant Type: Bushes
Light Exposure: Partial Sun to Full Sun (At Least 5 Hours of Direct Sunlight)
Mature Height: 3 - 4 Feet
Mature Spread: 3 - 4 Feet
Spacing: 3 - 4 Feet
Habit: Mounded
Flower Color(s): White, Yellow
Flower Description:
Bloom Period: May Through October
Foliage Type: Deciduous
Foliage Color(s): Black, Green
Foliage Description: Almost Black
Seasonal Interest: Spring Flowering, Summer Flowering, Fall Flowering, 3 Season Interest
Watering: Low
Resists: Disease, Pests & Insects
Tolerates: Drought
Attracts: Butterflies
Container Role: Thriller
Uses: Borders, Containers, Hedges & Privacy
Features: Attracts Pollinators, Fragrant, Low Maintenance
Brand: Knockout Roses
Common Name: White Knock Out® Rose
Other Name(s):
Scientific Name: Rosa White Knock Out®

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
 Volume:
   1.42 quarts

Quart Pot

Quart Pot
 Also Know As:
   Quart

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