shrub

Radgor Rainbow Knock Out Rose

Rosa 'Radgor'

The Story

Plant Bio

The Knock Out® series of roses are shrub roses bred for exceptional disease resistance, profuse blooming, and low maintenance requirements compared to traditional roses.

'Radgor' stands out with its single, coral-pink petals that have a bright yellow center, creating a multi-toned effect as the flowers age. The foliage is a deep, glossy green with burgundy highlights.

Uses & Benefits:

Provides a continuous display of cheerful, multi-toned flowers from spring until the first hard frost. Its compact, bushy habit makes it a versatile and colorful addition to any sunny garden.

This is a workhorse shrub for low-maintenance landscaping. It can be used as a specimen, in mass plantings, or as a low, thorny hedge, all with minimal care and no need for complicated spraying or pruning routines.

The single-petal flowers are accessible to pollinators, providing a steady source of pollen for bees throughout the growing season.

Essentials

At a Glance

Plant Type

Shrub

Height

42 inches

Width

42 inches

Light

Full Sun

Zones

4, 5, 6, 7, 8, 9, 10

Water

Medium

Humidity

Adaptable

Lifespan

Long-lived shrub

Native To

Hybrid

Toxicity

Non-toxic, but thorns can injure

Bloom period

Late spring – Mid-fall

In flower about 6 months of the year

Planting

How to Grow

Select a site with at least six hours of direct sun daily.
Amend soil with compost for good drainage and fertility.
Dig a hole as deep and twice as wide as the pot.
Gently remove the rose from its container and loosen the roots.
Plant so the bud union is at or just above soil level.
Backfill, water thoroughly, and apply mulch.

Pro Tip

While self-cleaning, a quick deadheading will encourage even faster rebloom and a tidier appearance.

Keep It Thriving

Care Guide

Do

Provide at least 6 hours of full sun.
Water deeply at the base of the plant.
Fertilize regularly for best blooming.
Prune back hard once a year in late winter.

Don't

Do not water the foliage late in the day.
Do not plant in a shady location.
Avoid crowding plants to ensure good air circulation.
Do not be afraid to prune it hard annually.

Seasonal Care Calendar

Task	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Fertilize
Pest Check
Prune

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Effortless low hedgeContinuous color in mixed bordersMass planting for high impact

Companion Plants

Nepeta 'Walker's Low'Salvia 'May Night'Lavandula 'Munstead'Perovskia atriplicifolia Calamagrostis 'Karl Foerster'

Multiply

Propagation Methods

Good to Know

Common Questions

Radgor Rainbow Knock Out Rose questions

What zones can Radgor Rainbow Knock Out Rose grow in?

Radgor Rainbow Knock Out Rose is hardy in USDA Zones 4–10. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.

Is Radgor Rainbow Knock Out Rose deer resistant?

Not reliably. Deer may browse Radgor Rainbow Knock Out Rose, especially tender spring growth — plan on repellents or fencing where pressure is high.

When does Radgor Rainbow Knock Out Rose bloom?

Radgor Rainbow Knock Out Rose typically blooms in late spring through mid-fall. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.

Does Radgor Rainbow Knock Out Rose need full sun?

Radgor Rainbow Knock Out Rose does best in full sun (6+ hours).

Is Radgor Rainbow Knock Out Rose drought tolerant?

Yes — once established (usually after the first full season), Radgor Rainbow Knock Out Rose handles dry spells with minimal watering. Water deeply its first year to build the root system that makes that possible.