Product Description
This Double Red Knock Out® Rose bush will be a knock out 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 of 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. Roses will bloom from spring until mid summer profusely 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.
Double Knockout Rose Care
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. It can get up to 3 feet tall and 3 feet wide and is extremely fast growing. The best time of the year to plant the knockout roses is in early spring or fall so it has a whole growing season to establish its root system.
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 at the top of the root ball will help tremendously with new blooms. Water thoroughly the first year of planting to establish strong roots. Newly planted roses require 1-2 inches of water per week.
They are extremely cold hardy and easy to grow roses with some special care. They can be grown in most areas of the country and the red flowers will grace any landscape. Drought tolerant and self-cleaning once established, this aesthetic rose shrub suits every garden and every lifestyle.
Double Red knockout roses are easy to care for and provide beautiful rose blooms during the spring and summer blooming season. Occasionally, we get customers asking us why their rose bushes 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.
Perfect Plants offer their very own specially formulated Rose Planting Mix to amend the soil you are planting your new rose bush or rose container in.
Shop the red Double KnockOut Roses for sale.
Grow guide for Roses is available as well as another blog on how to Plant a Rose Bush.
Rosa x 'Radtko'
- Reblooming
- Self-cleaning
- Disease resistant
- Drought tolerant
Growing our own plants and trees helps to ensure we ship you the best quality plants that are free of pests and diseases.
Kathy –
Received beautiful plants with buds ready to bloom. Very excited to watch them grow in my yard. Will purchase more!
Sherry P. –
Didn’t know which roses to pick for my grandmother so I called and spoke with Natalie. She was so very helpful and knowledgeable. After telling her about where I think they should be planted at my grandmothers house, I picked the Knockout red. Can’t wait for them to ship! Customer service A+
Tammi C. –
Happy Gardener, they came with flower buds almost exactly like the picture! Very pleased and will shop here again. Fast shipping too.
Thanks,
Tammi C.
Linda Drury (verified owner) –
My plant looks real healthy and is starting to show new growth
Perfect Plants (store manager) –
Hi Linda, we are so glad your Double Red Knock Out Rose arrived healthy and is growing! Enjoy
Patricia (verified owner) –
The plants seem healthy but i am anxiously waiting for them to bloom..I love the knock out roses.
Perfect Plants (store manager) –
Patricia, we encourage you to deadhead any spent blossom to encourage re-blooming. If you have any questions about your Double Red Knock Out Rose please reach out to us!
Lisa (verified owner) –
Very lovely rose bush. Is doing well and looks great in my yard. Can’t wait to see them when they grow up and take over the garden. Plant arrived in perfect condition and is just beautiful.
Perfect Plants (store manager) –
Hi Lisa, thank you for reviewing our Double Red Knock Out Rose bush. We are glad it arrived safe and sound and that you love it!
Beatrice S. (verified owner) –
It was a gift for my mother’s birthday. She said it’s thriving and beautiful!
Perfect Plants (store manager) –
Hi Beatrice, thank you for your feedback on our Double Red Knock Out Rose. We are so happy your mom liked her birthday gift! Enjoy those beautiful blooms.
Julian (verified owner) –
They made it! Thought they would be bigger but, nice plants!
Perfect Plants (store manager) –
Hi Julian, thank you for reviewing our Double Red Knock Out Rose bush. They will soon grow to be big and even more beautiful plants. We do recommend an annual fertilizer. Good luck!