Botanical profile

Climbing rose 'Improved Blaze'

Latin name
Rosa 'Improved Blaze'
Common name
Climbing rose 'Improved Blaze'
Type
Flowering shrub
Family
Rosaceae

The Rosa 'Improved Blaze', a vigorous and intensely colored climbing rose, is renowned for its vibrant scarlet double flowers that retain their intensity throughout their bloom. Produced in generous clusters, they create a spectacular effect during the main flowering season, followed by lighter flushes throughout the rest of the season. Its classic style makes it an essential choice for adorning arches, pergolas, and facades with immediate visual impact. Lightly fragrant, it primarily captivates with its abundant blooms and reliability. Its dense, robust dark green foliage highlights the vibrancy of the red while contributing to good overall resistance. Appreciated for its vigor and sustained floriferousness, the Rosa 'Improved Blaze' brings energy, structure, and chromatic intensity to vertical landscaping while actively attracting pollinating insects.

Care guide

Growing conditions

Light, soil, water and hardiness

Hardiness zone
Zone 5
Exposure
Full sun or at least 6 hours of direct sun per day.
Watering
Water regularly the first year to encourage rooting. Then, water deeply during periods of heat or drought.
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
-29°C
Plant appearance

Blooming, foliage and shape

Blooming period
June to September
Flower color
Scarlet red
Fruiting
Occasional production of rose hips late in the season
Foliage color
Green
Foliage type
Obsolete
Shape
Climbing
Garden structure

Size and growth

Height
10 ft (3 m)
Width
300 cm (10 feet)
Growth rate
Average
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.