Photo by Melody

PlantFiles: Climbing, Rambler Rose
Rosa 'Perennial Blue'

Family: Rosaceae (ro-ZAY-see-ee) (Info)
Genus: Rosa (RO-zuh) (Info)
Cultivar: Perennial Blue
Additional cultivar information: (aka Mehv9601)
Hybridized by Mehring; Year of Registration or Introduction: 2003

» View all varieties of Roses

Modern Climber

8-10 ft. (2.4-3 m)

Unknown - Tell us

USDA Zone 5a: to -28.8 C (-20 F)
USDA Zone 5b: to -26.1 C (-15 F)
USDA Zone 6a: to -23.3 C (-10 F)
USDA Zone 6b: to -20.5 C (-5 F)
USDA Zone 7a: to -17.7 C (0 F)
USDA Zone 7b: to -14.9 C (5 F)
USDA Zone 8a: to -12.2 C (10 F)
USDA Zone 8b: to -9.4 C (15 F)
USDA Zone 9a: to -6.6 C (20 F)

Bloom Color:
Mauve and mauve blend (mb)

Bloom Shape:

Flower Fragrance:
Slightly Fragrant
Very Fragrant

Bloom Time:
Mid Summer
Late Summer/Early Fall
Mid Fall

Trained to climb
Trained on pillar
Trained as rambler

Patent Information:
Unknown - Tell us

Other Details:
Unknown - Tell us

Pruning Instructions:
Unknown - Tell us

Soil pH requirements:
5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)

Propagation Methods:
From softwood cuttings
From semi-hardwood cuttings
From hardwood cuttings
By grafting
By budding


No positives
1 neutral
No negatives

Gardeners' Notes:

Neutral coriaceous On Aug 27, 2014, coriaceous from ROSLINDALE, MA wrote:

This is a rambler with reliable repeat bloom and decent fragrance. Flowers are semi-double (9-16 petals), about 1.5" across, cupped bloom form, in large clusters.

Color is usually described as mauve, but is often nearly magenta/purple. This plant has been described as a repeat-blooming 'Veilchenblau.'

This is highly resistant to black spot, and can be grown no-spray here (Boston Z6a) without defoliating. Won an ADR (All-Germany sustainable rose trials [no-spray]) in 2013.

Parentage: Super Excelsa x Veilchenblau


This plant has been said to grow in the following regions:

Des Moines, Iowa
Tacoma, Washington

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