White Knock Out® Rose
Shrub
- Snow-white blooms cover dark foliage!
- Continuously blooms for over five months.
- Heat, humidity, and drought tolerant.
- Highly disease resistant.
- Grown on its own roots - not grafted. No special protection or fussing required.
- Zones 4-10, sun, 3' tall x 3' wide at maturity.
ZONE
EXPOSURE
HEIGHT
Description
Details
Patent #: USPP 20,273
Common name: Rose
Zone: 4 - 10
Sun exposure: Sun (> 6 hours sun)
Height x width: 3' x 3'
Flower color: White
Foliage color: Dark green
Season of interest: Summer through fall
Bloom time: Spring, fall
Features: Low flammability, heat tolerant, drought tolerant, ground covers, container plants, cold tolerant
Uses: Accent, Border, container gardening, cottage gardening, drought tolerant, foundation planting, ground cover, hedge, massing, ornamental, specimen
How to Grow
Light: Sun (> 6 hours sun)
Water: Try to keep the soil evenly moist, especially in their first growing season. Never allow the foliage to remain wet into the evening; water early in the day.
Spacing: 3 - 4 ft.
Fertilizing: To keep the flowers coming, feed your roses with a fertilizer blended especially for roses. This can be done after each bloom cycle.
Winterizing: Spread a layer of composted manure, compost, or shredded leaves over the base of the plant in late fall after the ground freezes. Covering these mounds and the lower parts of the bushes with evergreen boughs will add protection. Pull the mounding material away from the stem as new growth emerges in spring. Prune injured branches over when new buds emerge in spring.
Maintenance & pruning: Prune to remove deadwood, to control or direct growth, and to promote flowering. Wait until growth breaks in early spring before pruning. Every 2 or 3 years, remove about one-third of the old branches to stimulate new, fresh growth. There is no need to remove faded flowers because these roses are self-cleaning.
Plant spacing is based on the ultimate width of the plants. This figure is normally given as a range; for example, 3-5’. If you live in a cold climate and/or want plants to fill in more quickly, plan to space at the shorter end of the range. If you live in a warm climate, are on a limited budget, or are willing to wait longer for plants to touch, use the higher end of the range. Using the larger number is recommended when calculating distance from a building or structure. There’s really no such thing as "maximum spacing": if you don’t want your plants to touch, you can space them as far apart as you’d like. All plant spacing is calculated on center, or in other words, the centers of the plants are spaced one half of their eventual width apart:
Unless you are planting in a straight line, as you might for hedges or edging, space your plants in a staggered or zig-zag pattern for a more interesting and naturalistic look:
Not sure just how many plants will fit in your garden? Our calculator gives you the exact amount of plants required for your space. Simply update the values and the calculator will re-calculate accordingly. Spacing information can be found in the 'How to Grow' tab on each plant's page.
I am very pleased with my purchase and my plants are already blooming. I will say I didn't understand the size of 'quart' when I purchased. So the plants were smaller than I expected. But they are all very healthy and thriving. Highly recommend!
Plants were very well packaged and arrived healthy
The best roses I have ever bought they were in Perfect condition when I receive them I am going to order 7 more
Shipment arrived faster than I thought, all well packaged. Followed instructions, planted and watered for 2 weeks. And they seem to be doing very well, even at their small size we are getting blooms. It’ll be fun to watch them grow to their full size.
I need more of your knock roses
Still waiting to hear about the claim I put in on 4/7/2023…. Photos gave now been sent over twice heard from someone and she never followed back on claim
Hi Claudia!
It looks like your replacement plants are on their way to your garden! Thank you for your patience!
Happy Gardening
I’m so happy I ordered 2 of these white knock outs. Now I want 2 more! They doubled in size i this summer. Lots of blooms!
Plants are much smaller than expected and not hardy at all. For the money I expected much more.
Hello Jeanna! I'm sorry to hear your disappointed in the size of your plants. While our plants are young we take great pride in growing quality plants that will quickly establish in your garden. If you have any questions or concerns about your plants don't hesitate to give us a call and we'll be happy to help you. Thank you for your feedback, we appreciate it!
my first time ordering from this company, i am very impressed! Packaged very well, arrived a day earlier than scheduled, already had little blooms, I followed instructions so the plants could adjust after their travels, I ordered about 2 months ago, both covered in beautiful white blooms, will be ordering again. Thanks!
Thank you for taking the time to leave your feedback, we appreciate it. We're so happy to hear your new plants arrived safely. We'd love to see pictures of them this season in your garden, feel free to share them with us. Let us know if you ever have any questions, we're here to help.
I live in zone 4, and I want a long lasting low Frangrance white rose, or fustia deep pink, that blooms all summer, what is out there.
This rose would be an excellent option for you as it is self cleaning and will bloom from summer through fall!
What size container can a knock out rose be planted in?
Thank you for contacting us.We suggest pairing the pot size to the size of the plant you purchased, then repotting as it matures. So here are our guidelines for matching the diameter of the decorative container to the size of the plants for sale:
3-inch: 3-4″ pot
Quart: 8-9″ pot
2-Quart: 9-10″ pot
1 gallon: 10-12″ pot
When is the best time to plant this outdoors in zone 6?
The best time to plant is in late spring or early to mid-fall. Now is a great time to plant perennials and shrubs, especially in warmer zones! To learn more about fall planting, you can read our guide here: https://blog.greatgardenplants.com/our-guide-for-fall-planting/
How tall do the white knock out rose bushes get
Hi Anne! White Knock Out rose grows to 3 feet tall and wide. You can find all the plant info under the "more information" section under the "details" tab!
What size pot does the white knockout rose come in?
Our White Knock out roses are grown in a 1 quart container. check out our plant sizes page. https://www.greatgardenplants.com/pages/sizes