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The Daily Insight

What can I plant with red knockout roses

Author

Ava Hall

Published Feb 27, 2026

Lavender.Mexican sage.Herbs such as catmint, thyme or oregano.Marigolds.Larkspurs.Petunias.Salvias.Lambs’ Ear (Stachys byzantina)

What to pair with red roses?

  • Brunnera ‘Jack Frost’ …
  • ‘Elegant Candy’ Daylily. …
  • Lady’s Mantle. …
  • ‘Munstead’ Lavender. …
  • ‘Presto’ Tickseed. …
  • Festival Star Baby’s Breath (Gypsophila paniculata ‘Danfestar’) …
  • ‘Jacob Cline’ Bee Balm. …
  • Peach-Leaved Bellflower (Campanula persicifolia)

Can you plant lavender with knockout roses?

Lavender. Of the Knockouts, only “Sunny” (Rosa x “radsunny”) is fragrant, so adding a fragrant border plant to any other Knockout rose brings welcome fragrance. Lavender (Lavandula spp.)

What should you not plant next to roses?

The University of Missouri Extension warns against planting large shrubs and trees close to roses because they will outcompete the roses for resources. Large shrubs and trees can also block out sunlight and restrict airflow around the foliage, which can cause problems for rose bushes.

Where is the best place to plant Knock Out roses?

As long as there is enough sunlight, Knock Out roses can be planted just about anywhere in your garden. They will do exceptionally well when planted in south and east-facing areas where they will receive the most sunlight. They will tolerate part shade well; however, flowering may be reduced.

What plants go well with standard roses?

Companion plants that grow well with roses: Mini agapanthus, Lamb’s Ears, Erysimum, Woodworm, Dianthus, Chamomile cultivars, Pansies, Petunias, Violets, Daisy, Strawberries, Gerbera, Daylilies, Bearded Iris, Statice, Baby’s Breath and Delphinium.

Can I plant 2 roses together?

Different varieties of roses may be planted as single plants within the same border. Similarly, single rose plants may be planted amongst other companion plants within a mixed border. In both instances, make sure you allow enough space for the mature width of the rose. Diagram shows one rose planted in a bed or border.

Do hydrangeas and roses grow well together?

Hello, like the previous readers said, some roses like full sun and most hydrangeas like shade. HOWEVER, one combination works perfectly together. … You can use limelight hydrangeas and knock-out roses. I alternated the two and they both grow at least 5 feet if not more.

What is a good ground cover for roses?

Recommended rose ground cover plants include Calamintha nepeta, Artemisia stelleriana ‘Boughton Silver’ and Erigeron karvinskianus. Valuable evergreen detail is found in Teucrium x lucidrys and Euphorbia myrsinites, while the grasses Stipa calamagrostis and Stipa lessingiana add movement and vertical interest.

Can I plant roses with peonies?

Given their color and size range, roses go exceptionally well in just about any garden. Roses are able to grow well virtually anywhere, but they do best in warmer regions and make great companions for peonies.

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What flowers compliment knockout roses?

Try combining “Pink” Knock Out rose with lavender, white or blue flowers for a restful feel. The creamy yellow blooms of “Sunny” Knock Out rose pairs well with purple, blue or white flowers.

Can I plant marigolds with roses?

Marigolds – Use the lower growing varieties to add beautiful enhancing colors to the rose bed. Marigolds have been known to repel many insect pests as well as help control harmful nematodes.

How do you plant lavender and roses together?

Lavender can grow well with Roses as they flower around the same time and share some growing preferences such as full sun and well draining soil. However lavenders prefer dryer soil, less water and lower soil fertility then roses so it is important to plant roses and lavenders 2-3 feet apart.

Why do my Knock Out Roses look so bad?

Knockout Roses are generally easy to grow but are affected by familiar rose diseases: Rust, Black Spot, Botrytis Blight, Powdery Mildew and Stem Cancer. … One other possibility, one that has become a problem with Knockout and Drift roses, is Rose rosette disease, spread by a mite.

How do I make my Knock Out Roses bushier?

We’ve found that pruning just above an outward-facing bud will promote a wider, bushier rose bush. Knock Out Roses can be pruned lightly throughout the active growth season. Deadheading spent blooms or clusters will encourage quicker formation of new buds and rebloom.

What is the best time to plant Knock Out Roses?

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.

How far apart should I plant Knock Out roses?

Just like other roses, The Knock Out® Family of Roses perform best when planted in full sun. The soil should be well drained and fertile. Plant the roses 4 feet apart to allow for room to grow and good air circulation. To keep the flowers coming feed your roses with a fertilizer blended especially for roses.

How close together can roses be planted?

Each plant will cover an area of about 1 to 2 square feet. Climbing roses should be planted 4 to 5 feet apart. Standard tree roses should be planted 3 to 5 feet apart. Patio tree roses should be planted 3 to 4 feet apart.

Can roses get too much sun?

Roses thrive on direct sunlight. For best results, a minimum of four hours of direct sunlight is recommended. However, even when planted against a north wall (meaning no direct sunlight) roses can still perform well. To see a list of roses suitable for shaded areas click here.

Do azaleas and roses grow well together?

Many shrubs are unsuitable because they will be too competitive for the nutrients, space, and water. What is this? For example, you should avoid hibiscus and azaleas because they will crowd your roses and rob them of the nutrients and water they need.

Can you plant roses with hostas?

I also grow roses and hostas together, that is the roses provide some shade for the hostas. There are two large climbing roses at the deck in the back getting a lot of sun, and hostas below the deck getting only 2 hours of direct sun.

What kind of mulch is best for knockout roses?

The use of mulch around roses to help retain soil moisture is a practice that is highly encouraged. Mulch will also help keep soils cool and help retard weed growth. Materials such as wood chips, straw, or dry grass clippings make good mulches.

Are egg shells good for roses?

Eggshells Are Full of Nutrients Primarily a rich source of calcium, eggshells help roses by strengthening the walls of the plant’s cell tissue. When rose plant parts are at their sturdiest, they are better able to fight off disease and pests.

What plants compliment hydrangeas?

Azaleas, hollies, yews, mahonia, gardenia, loropetalum and boxwood shrubs will look good planted in front of hydrangeas. Azaleas blossoms will provide early color. You can select your favorite blossom color since the azalea blooms will have faded before your hydrangea is flowering.

What do purple hydrangeas mean?

Hydrangeas commonly come in shades of pink, blue, purple, and green. … Pink hydrangeas symbolize heartfelt emotion. Blue hydrangeas symbolize frigidity and apology. White hydrangeas symbolize boasting or bragging. Purple hydrangeas symbolize a desire to deeply understand someone.

What perennials go well with peonies?

Peony blooms open to a round shape, which pairs smartly with flowers formed along a spike. Good spike bloomers that flower when peonies do include foxglove, delphinium, lupine and clustered bellflower (Campanula glomerata). False indigo (Baptisia australis) is another great spike bloomer for pairing with peony.

Are knockout roses annuals or perennials?

Knock Out roses One of the most low-maintenance perennials, they require little care for such aesthetic beauty. Knock Out rose bushes withstand sun and heat, and if cut back after the initial bloom, will flower several times per season for prolonged enjoyment.

Are there white knockout roses?

An excellent shrub rose that stands out in the landscape due to the contrast between pure white blooms and very dark green foliage. It blooms from spring through fall, maintaining a compact habit.

Can you plant daylilies with roses?

Because this garden receives over 8 hours of daily sunlight, the daylilies have become giants and are crowding out the “stars” of the garden – our roses. … These will make less intrusive companions to the roses, lavender, sedum, and Mike’s tomato plant that already reside in the garden.

Can I plant nasturtiums with roses?

Nasturtiums as Companion Plants Nasturtiums fit nicely into the companion plant category by attracting hoverflies, which will destroy aphids on your prize roses or in your vegetable garden.

Can you grow roses and jasmine together?

Jasmine’s fragrance carries and fills the air with the rich, heady scent of hot Turkish delight and rose petal jelly – with added pheromones. … And although they are quite big – strong twining climbers that can reach 40ft – they are perfectly happy to share space with other climbers, such as roses.