Photo by Melody

PlantFiles: Floribunda, Hybrid Wichurana, Large Flowered Climbing Rose
Rosa 'Blaze Improved'

Family: Rosaceae (ro-ZAY-see-ee) (Info)
Genus: Rosa (RO-zuh) (Info)
Cultivar: Blaze Improved
Additional cultivar information: (aka Blaze Superior, Demokracie, New Blaze, Improved Blaze)
Hybridized by Bohm; Year of Registration or Introduction: 1935

» View all varieties of Roses

One vendor has this plant for sale.

4 members have or want this plant for trade.

Cluster-flowered (incl. Floribunda & Grandiflora)
Modern Climber

12-15 ft. (3.6-4.7 m)

6-8 ft. (1.8-2.4 m)

USDA Zone 3a: to -39.9 C (-40 F)
USDA Zone 3b: to -37.2 C (-35 F)
USDA Zone 4a: to -34.4 C (-30 F)
USDA Zone 4b: to -31.6 C (-25 F)
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)
USDA Zone 9b: to -3.8 C (25 F)
USDA Zone 10a: to -1.1 C (30 F)
USDA Zone 10b: to 1.7 C (35 F)

Bloom Color:
Dark red (dr)

Bloom Shape:

Flower Fragrance:
Slightly Fragrant

Bloom Time:
Blooms all year

Trained to climb

Patent Information:

Other Details:
Stems are moderately thorny

Pruning Instructions:
Blooms on new wood; prune early to promote new growth

Soil pH requirements:
6.6 to 7.5 (neutral)

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

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By Gindee77
Thumbnail #1 of Rosa  by Gindee77

By Gindee77
Thumbnail #2 of Rosa  by Gindee77

By Gindee77
Thumbnail #3 of Rosa  by Gindee77

By janders
Thumbnail #4 of Rosa  by janders

By janders
Thumbnail #5 of Rosa  by janders

By Calif_Sue
Thumbnail #6 of Rosa  by Calif_Sue

By jess2132000
Thumbnail #7 of Rosa  by jess2132000

There are a total of 9 photos.
Click here to view them all!


4 positives
1 neutral
No negatives

Gardeners' Notes:

Positive tearoses On Apr 23, 2014, tearoses from Denham Springs, LA wrote:

After all these years I just figured out that this is the large red climber my parents grew on the huge trellis on the front of their 50's track house. Every spring my siblings and I would anxiously await on mom, scissors in hand, to cut each of us a bouquet for our elementary school teachers. Stems rapped with wax paper or aluminum foil so we wouldn't prick our little fingers. Silly huh? Well I now grow this rose and it bloomed for the first time. Memories. Ahh

Positive jess2132000 On Jan 4, 2009, jess2132000 from Harleysville, PA wrote:

Blaze take a year or two to get going but its a lovely climber as it ages.. It can get some blackspot issues but alway blooms all summer for me. the best show is in June as this is when i took the photo of mine climbing our shed. I love this rose and its been in the group 5 years now!!!

Positive janders On May 29, 2006, janders from Rockwall, TX wrote:

I put this rose against my house and people actually stop me to comment on them when I'm in my yard. Very beautiful, large clusters of blooms.

Positive Gindee77 On May 21, 2005, Gindee77 from Hampton, IL (Zone 5a) wrote:

This is a great climber that has little die-back in my zone 5 garden. It blooms in flushes and is a great bright red color.

Neutral trifunov On Oct 20, 2004, trifunov from Brandon, MS (Zone 8a) wrote:

I bought this rose bare-root in spring, it took a long time to "wake up" and has only had a couple of blooms all season. Hopefully next year will be better.


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

Warrior, Alabama
San Jose, California
Denver, Colorado
Hampton, Illinois
Westchester, Illinois
Logansport, Indiana
Lansing, Kansas
Denham Springs, Louisiana
Danvers, Massachusetts
Brandon, Mississippi
Troy, New York
Rocky Mount, North Carolina
Harleysville, Pennsylvania
Rockwall, Texas
Olympia, Washington

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