Growing The Petite Knockout Rose: Caring For Miniature Knock Outs

The Petite Knockout Rose is the miniature version of the Knock Out Rose cultivar bred by William Radler.

Alain Antoine Meilland, a well-known rose breeder of the House of Meilland Botanical Company, produced this miniature variety.

Bold red blooms of Petite Knockout RosesPin

It is the product of a Meipaonia rose, aka the Baby Romantica, and a Radtko rose, or Double Knock Out Rose.

The knockout rose family is a patented and trademarked family of roses. They offer resilience and immunity to pests and discoloration.

These roses, like most other roses, are perennials.

The botanical name for hybridized roses is Rosa hybrida. Botanists consider this an artificial category.

Common names of the Knockout Rose:

  • Dwarf Knockout Rose
  • Rosa “Meibenbino”
  • Zepeti, as introduced in France
  • Miniature Knockout Rose
  • Miniature rose

Knockout Rose Quick Care Tips

  • Botanical Name: Rosa ‘Meibenbino’
  • Common Name(s): Dwarf Knockout Rose, Miniature Knockout Rose, Miniature Rose, Zepeti
  • Synonyms:
  • Family & Origin: Rosaceae, bred by William Radler in the United States
  • Growability: Easy to grow
  • Grow Zone: USDA zones 5-10
  • Size: Grows up to 12-18′ inches tall
  • Flowering: Blooms from spring to fall
  • Light: Full sun
  • Humidity: Average humidity
  • Temperature: Hardy to -20°F
  • Soil: Well-draining soil
  • Water: Regular watering, but avoid overwatering
  • Fertilizer: Fertilize in spring and summer with a balanced fertilizer
  • Pests & Diseases: Susceptible to black spot and aphids
  • Propagation: Propagated through cuttings or grafting
  • Plant Uses: Ideal for borders, containers, and mass plantings.

Petite Knockout Rose Care

Taking care of Petite Knock Out Roses will comprise of the following:

Petite Size And Growth

As its name suggests, the Petite Knockout Rose is a small plant with shiny green foliage. It only grows between 12″ – 18″ inches at maturity and gives the landscape a dramatic pop of color and curb appeal.

This miniature Knock Out does well in the USDA Hardiness Zones 5 through 10. It is best in zone 5, a large Northeast and lower Midwest region.

This easy care shrub rose plant requires direct full sun or partial sunlight for ideal growing conditions. It blooms from spring to fall.

This plant needs an average amount of water and well-drained soil for the best growth. The soil should not allow pooling or remain oversaturated for too long.

Bright Red Flowers with Minimal Fragrance

The Petite Knock Out produces brilliant fire engine red blooms that never fade from late spring to fall. This flower power plant also features continuous flowering.

The rose’s foliage is dark green, glossy, and quite dense, producing a large rose bush even in miniature form.

Unlike most roses, the Petite Knockout Rose doesn’t have a noticeable scent because Knockout Roses do not have much pollen.

Only two varieties of this highly-bred type of rose have any smell: the Yellow Knockout ‘Sunny’ and White.

Light And Temperature

Like the original Knock Out roses, these dwarfs prefer direct or at least partial sunlight, with at least six to eight hours of sunlight per day. This lighting rule also means that this compact plant can withstand hot temperatures.

Providing full sun also helps produce deep green leaves.

In zones below five, where extreme temperatures fall into the negatives, Petite Knockout Roses need extra winter care.

If planted in the ground, cover your roses to protect them from chills.

Leave container plants outside during the first frost of the winter. Then move the plant to a cool, dark area, such as a garage or basement.

Check on them throughout the season to ensure they are not drying out.

Watering And Feeding

Water the Petite Knockout Rose twice a week until the plant is happy in its new soil or surroundings. After establishing, water the plant less often.

To check if your roses need watering, feel the soil a few inches down — if the soil is dry, water your plant.

Avoid fertilizing your Petite Knockout Rose late in the blooming cycle, particularly in late summer. The fertilizer could promote new growth that will die off with the dormant season.

Related: Fertilizing Tips For Knockout Roses

Soil And Transplanting

The miniature Knock Out Rose works well both as container plants and in the ground.

For repotting:

  • Use a container two sizes bigger than the current one. This allows the roses to grow to their full extent and promote growth. 
  • Ensure that soil is well-aerated and well-drained.
  • Use pots with drainage holes or create drainage holes with a drill.
  • Fill in soil around the roses and leave only about 1 ½” inches at the top of the container.
  • Pull back on your watering schedule after the roses establish themselves.
  • The tips for planting the Petite Knockout Rose are much the same as the guidelines for repotting.

Grooming And Easy Maintenance

The Petite Knockout Rose is a low maintenance plant.

It does need some routine trimming and pruning to clear out unwanted canes and provide for good air circulation. The best time for this pruning is in early spring or late winter.

Related: More on Pruning Knockout Roses.

Knockout Roses are also known for being self-cleaning. Thus, there is no need for deadheading, the process of removing old or dead blooms from roses.

These low-maintenance Petite Knockout Roses are great for both novice and experienced gardeners.

They are best grown in decorative containers for your patio or porch.

How To Propagate Petite Knockout Rose

Unlike typical roses, the Petite Knockout Rose is Utility Patent Pending. This is the first rose to have this type of patent.

It means gardeners cannot propagate Petite Knockout Roses without the patent holder’s permission.

Petite Knockout Rose Pests Or Diseases

Petite Knockout Roses are famous for their resilience and resistance to disease and pests. But they are not perfect. Learn about diseases that attack Knock Out Rose bushes.

This form of the rose is also “Black Spot resistant,” the fungus caused by Diplocarpon rosae. If it appears on a rose’s foliage, it can weaken the plant over time.

Meilland bred the Petite Knockout Rose to prevent black spots on roses from appearing.

Petite Knockout Rose Uses

Petite Knockout roses make an excellent plant choice for your balcony gardens, entryway, and small yards.

Their vivid blooms are perfect for adding a pop of color to any mass planting, landscape, or space. They also make a lovely focal point as a small tree.

These plants also commonly attract pollinators, including butterflies and bees.

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