Botanical profile

Grandiflora rose 'John S. Armstrong'

Latin name
Rosa 'John S. Armstrong'
Common name
Grandiflora rose 'John S. Armstrong'
Type
Flowering shrub
Family
Rosaceae

Rosa grandiflora 'John S. Armstrong', known as the 'John S. Armstrong' grandiflora rose, is a classic variety prized for its upright bushy habit and elegant, deep velvety red blooms. Its large, well-formed, slightly fragrant double flowers are borne on long, sturdy stems, making them ideal for cutting. The glossy dark green foliage creates a striking contrast with the intensity of the petals, giving the plant a strong ornamental presence in mass plantings, borders, or as a specimen. Blooming profusely all summer long, Rosa grandiflora 'John S. Armstrong' attracts pollinators and structures landscape designs with its vigorous silhouette. It adds a sophisticated and timeless touch to both classic and contemporary gardens.

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 during establishment. Then, water during hot periods or when the soil is dry deep down.
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
'-30°C
Plant appearance

Blooming, foliage and shape

Blooming period
June to September
Flower color
Dark pink
Fruiting
Decorative red rose hips in the autumn if faded flowers are preserved
Foliage color
Green
Foliage type
Obsolete
Shape
Slender bush
Garden structure

Size and growth

Height
4.9 ft (1.5 m)
Width
90 cm (3 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.