Double Red Knock Out® Rose Bush

Double Red Knock Out® Rose Bush

17 reviews
  • Reblooming


  • Self-cleaning

  • Disease resistant

  • Drought tolerant

Regular price $69.95 Sale price $59.95 14% off
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  • Low stock - 19 items left
  • Inventory on the way
  • Ships in 2-3 business days (N/A to Pre Orders)
  • Buy direct from the grower
  • Family owned farm since 1980
  • You're good to grow this in Zone X

Explosive Red Blooms Cover This Shrub from Spring to Fall

This Double Red Knock Out® Rosebush will be a knockout of the park with its explosion of color all summer long!

The red double knockout rose bush has set a new standard in disease resistance when it comes to a beautifully bright and low-maintenance bloom. It is of the same rose family as the original rose of the knock-out family from Star Roses and plants.

This rose plant produces rich, cherry red to hot pink blossoms that will continue to grow until the first hard frost of winter. They are fully double flowers on the shrub rose bush. The bloom cycle starts in early spring and The double red roses will bloom from spring until mid-summer before the weather gets too hot. The bloom period will decrease slightly as fall and winter happen although it is relatively heat tolerant.

The red roses contrast nicely to the dark green foliage of the flowering shrub. If grown as a flowering tree, the red blooms will cascade over the green leaves year after year. This classic rose is slightly more winter hardy than other roses but may need extra winter protection in colder areas.

The rose bush features incredible resistance to black spots and powdery mildew leaf diseases and is an excellent choice as a low hedge or accent plant in mixed beds. They can even be container grown as an indoor patio plant for the ultimate flower power.

How To Plant Double Red Knockout Roses

Double Knock Out rose bushes prefer well-drained soil that is kept moist during the growing season. Be sure to examine the surrounding soil to make sure it’s suitable for your new rose bushes. A  Slow-Release Fertilizer applied at the top of the root ball will help tremendously with new blooms. Perfect Plants offer their very own specially formulated Rose Planting Mix to amend the soil you are planting your new rose bush in.

Water thoroughly the first year of planting to establish strong roots. Newly planted roses require 1-2 inches of water per week.

Grow the Red Knock Out rose tree in full sun to partial sun or part shade across the United States in USDA growing zones 5-10.

When To Plant Double Red Knockout Roses

The best time of the year to plant red Double KnockOut roses is in early spring after the last frost of winter,  or fall, so it has a whole growing season to establish its root system.

How Tall Do Double Red Knockout Roses Get?

Double Red Knock Out rose bushes can grow between 3 to 4 feet tall and 3 feet wide making it a good shrub for smaller gardens and spaces. They are extremely fast-growing and do well when planted in full sun with 3 to 4 hours of sun everyday. 

How To Take Care Of Double Red Knockout Roses

Double Red knockout roses are easy to care for and provide beautiful rose flowers and blooms during the spring and summer blooming season that can grace any landscape. 

They are extremely cold hardy and easy to grow in most areas of the country. Drought tolerant and self-cleaning once established, the double red knockout shrub rose suits every garden and every lifestyle. To encourage new blooms, it’s best to fertilize your Double Red Knock Out rose bush at the end of each bloom.

Occasionally, we get customers asking us why their red Knock Out rose bush leaves turn yellow. It’s usually a sign of overwatering or soil that’s too compact and doesn’t allow oxygen to flow to the roots. Be sure to aerate the native soil if it compacted with perlite or vermiculite to help with air circulation. Other causes of yellowing leaves could be downy mildew but that is uncommon and should be treated with fungicides.

Grow guide for Roses is available as well as another blog on how to Plant a Rose Bush.

When To Prune Double Red Knockout Roses

For best results, prune your Double Red KnockOut roses in the late winter or early spring, While the rose plants are still dormant and before any new growth. Pruning your red Double Knockout Rose bushes engourches a healthy and consistent bloom cycle, as they bloom on new growth as opposed to old growth.

You can cut back your red Double KnockOut rose bushes to help shape them, pruning off half to a third of total growth at a time, typically between 12 and 18 inches.

Shop the red Double KnockOut Roses for sale today and add these beautiful red and hot pink roses to your home and garden!

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Botanical Name
Rosa x 'Radtko'
sun-light

Sunlight
Full Sun / Partial Shade

Foliage Color
Green

Flower Color
Red, hot pink

Mature Width
3 ft

Mature Height
3 ft

Growing Zones 5, 6, 7, 8, 9, 10

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Customer Reviews
4.9 Based on 17 Reviews
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Filter Reviews:
PP
06/29/2022
Phyllis P.
United States United States

beautiful and healthy

I ordered the knock out roses and they came packed extremely well and were healthy looking right from the start. I will definitely order again.

08/28/2022

Perfect Plants Nursery

Thank you Phyllis for your kind words and continued support. Hope you're enjoying your Double Red Knock Out® Rose Bush. All the best.

DM
06/27/2022
David M.
United States United States

Product- knockout roses

Great experience. Roses arrived after having to follow up concerning the order not being shipped

08/28/2022

Perfect Plants Nursery

Thank you for sharing your experience with us, David. Hope you and your Double Red Knock Out® Rose Bush are doing well.

A
05/23/2022
Anonymous
United States United States

Roses

Absolutely wonderful…the roses look great and after a couple of weeks are doing very well. Would definitely order from you again and recommend you to my friends!

06/07/2022

Perfect Plants Nursery

Hi Anon, Thank you for leaving us a review on your purchase of our Knock Out Rose bushes. We're happy to know that you are satisfied with your plants! Best, Shirley

EC
06/10/2021
Earl C.

We are VERY pleased with our plant and it is doing well. It is hard to believe the flowers we saw on arrival and still. The rose was well packaged and arrived is great condition.

06/24/2022

Perfect Plants Nursery

Hi Earl. We are always so happy to read these types of reviews. Hope you're Double Red Knock Out® Rose Bush is doing well.

BP
06/08/2021
Bao P.

06/24/2022

Perfect Plants Nursery

Hi Bao! We appreciate your Double Red Knock Out® Rose Bush purchase. Smell you later!

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