Botanical profile

Hardy rose bush 'Knock Out' red

Latin name
Rosa 'Knock Out Red'
Common name
Hardy rose bush 'Knock Out' red
Type
Flowering shrub
Family
Rosaceae

The 'Knock Out' Red Shrub Rose is a vigorous flowering shrub with a bushy, rounded habit, renowned for its exceptional bloom and remarkable disease resistance. It produces an abundance of intense cherry-red single flowers that continuously rebloom from early summer until the first frosts. Its glossy dark green foliage remains healthy all season, even in challenging conditions, making it a highly reliable choice for low-maintenance gardens. Ideal for beds, borders, or group plantings, it effectively structures landscapes in full sun. Highly hardy and high-performing, the 'Knock Out' Red Shrub Rose attracts pollinators and adds a dynamic and lasting touch to the landscape.

Care guide

Growing conditions

Light, soil, water and hardiness

Hardiness zone
Zone 4
Exposure
Full sun or at least 6 hours of direct sun per day.
Watering
Very drought tolerant once established. Regular watering only the first year or during severe droughts.
Fertilization
Fertilize in spring with a rose or flowering plant fertilizer. Repeat every 4 to 6 weeks until mid-August. Do not fertilize after this time to allow the plant to fully enter dormancy.
Soil type
Rich, well-drained soil
Minimum temperature
'-35°C
Plant appearance

Blooming, foliage and shape

Blooming period
June to September
Flower color
Intense red
Fruiting
Decorative red rosehips late in the season
Foliage color
Green
Foliage type
Obsolete
Shape
Rustic bush
Garden structure

Size and growth

Height
100 cm (40 inches)
Width
100 cm (3.5 feet)
Growth rate
Average
Vegetable garden and yield

Companion planting, spacing and harvest

Harvest period
TRUE
Pet friendly
Safe for pets

Pets

Pollinators
Attracts or supports pollinating insects

Pollinators

Butterflies
Plants that attract butterflies

Butterflies

The availability of our plants varies depending on arrivals, seasons, nursery production and supplier availability. Some varieties may be offered for a limited time only, depending on their natural cycle or current stock. These plant profiles are designed to guide and inspire you when choosing plants for the garden, landscaping projects, containers or long-lasting outdoor arrangements.