Hardiness
Zone 5
Discover the plant
Grandiflora rose 'John S. Armstrong'
FamilyRosaceae
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.
Soil and care
The rightconditions.
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.
Bloom and dimensions
The completeprofile.
Bloom periodJune to September
Flower colorDark pink
Foliage colorGreen
Foliage typeObsolete
FruitingDecorative red rose hips in the autumn if faded flowers are preserved
Maximum height4.9 ft (1.5 m)
Maximum width90 cm (3 feet)
Growth rateAverage
Hardiness zoneZone 5
Minimum temperature'-30°C
