Answering 7 Questions Everyone Has About Knockout Roses In Nashville

Amanda is considering growing knockout roses in her garden, but she has some questions in need of answering.

She’s seen some amazing pictures of them online. Their beautiful colors are engaging and can add vibrancy to any garden in Nashville. But, she isn’t sure if they are the right plant for her.

Red knockout rose looking beautiful

Before she makes any decisions, Amanda is going to do some research.

She sits down at her computer and starts typing in questions about knockout roses into Google. She wants to know things like how long they bloom, how to grow them, where to plant them, and more.

Here are the 7 questions Amanda asks Google and the answers she found for them.

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1. How Long Do Knockout Roses Bloom? How Long Will They Live?

Knockout roses will bloom from spring to late fall (around April – November). They have blooming cycles of about 5-6 weeks. This means you may see about 5-7 bloom cycles. Not all cycles will be heavy with blooms (plants need growing breaks too). It usually alternates between heavy and light blooms.

They can live for decades if you care for them properly. This means cutting back dead canes every 2-3 years to give the bush new life.

2. When Is The Best Time To Plant Them?

The best time to plant knockout roses is in the spring or fall. Make sure there is no threat of frost or they may not last through it.

3. Where Is The Best Place To Plant Them?

The best areas for knockout roses are ones that receive at least 6 hours of full sunlight (the more the merrier). You’ll want to give them about 3-4 feet of space so they have room to grow.

4. How Tall Do They Grow?

Knockout roses usually grow to a height of 3-4 feet. The Sunny Knockout Rose may reach 5 feet. In some cases, they can grow up to 6 feet tall, although it doesn’t happen often.

They usually spread out about 3-4 feet as well.

5. What Colors Do They Come In?

Knockout roses usually come in colors of red, pink, yellow, white, and even bi-colored on rare occasions. Bi-color means the petals are one color around the outside and another farther in towards the center.

6. How Do You Grow Knockout Roses (A Quick Overview)

  1. Find an area that gets full sun for at least 6 hours per day. The soil should be fertile and well-drained
  2. Dig a hole about 2x as deep and wide as the container the rose is currently growing in
  3. Loosen the soil at the bottom of the hole
  4. Turn the pot upside down and gently remove the rose (gentle shaking/tapping should do the trick)
  5. Loosen the soil and roots at the bottom of the plant
  6. Add the rose in the hole and fill
  7. You can add manure or fertilizer to help aerate the soil
  8. Soak soil in water, allowing it to soak in as necessary

Adding mulch can help retain water, keep them cool, and prevent weeds. Check in on them for the next 3-4 weeks to ensure they are getting enough water.

Prune annually to shape them and prune back old/dying canes by ⅓ every 2-3 years to help give the bush new life. 

7. Where To Buy Them In Nashville?

You can buy knockout roses from us right here at JVI Secret Gardens. We will also answer any questions or concerns you may have about growing them in your own garden.

Will You Have A Knockout Garden?

Knockout roses are a wonderful addition to almost any garden in Nashville. They are very disease-resistant on top of being beautiful, part of what makes them such a low-maintenance plant.

Pruning knockout roses helps them be more beautiful >>