Large-flowered Climbing Rose 'Dublin Bay'


Family: Rosaceae (ro-ZAY-see-ee) (Info)
Genus: Rosa (RO-zuh) (Info)
Cultivar: Dublin Bay
Additional cultivar information:(aka MACdub, Climbing Dublin Bay)
Hybridized by McGredy
Registered or introduced: 1975
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Modern Climber


6-8 ft. (1.8-2.4 m)

8-10 ft. (2.4-3 m)

10-12 ft. (3-3.6 m)


4-6 ft. (1.2-1.8 m)


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:

Medium red (mr)

Bloom Shape:



Flower Fragrance:

No fragrance

Bloom Time:

Late Spring/Early Summer

Blooms repeatedly



Trained to climb

Patent Information:


Other Details:

Resistant to black spot

Resistant to mildew

Resistant to rust

Stems are moderately thorny

Pruning Instructions:

Blooms on new wood; prune early to promote new growth

Avoid pruning

Soil pH requirements:

5.6 to 6.0 (acidic)

6.1 to 6.5 (mildly acidic)

Propagation Methods:

From softwood cuttings

From semi-hardwood cuttings

From hardwood cuttings

By grafting

By budding

Foliage Color:

Unknown - Tell us

Bloom Characteristics:

Unknown - Tell us

Water Requirements:

Unknown - Tell us

Where to Grow:

Unknown - Tell us


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

Redding, California

Kailua, Hawaii

Grayslake, Illinois

Wyanet, Illinois

Alexandria, Louisiana

Lawndale, North Carolina

Paris, Texas

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Gardeners' Notes:


On Nov 11, 2015, brandoncakes from Kailua, HI wrote:

Not the best climber for me so far. Out of all the climbers I purchased this year, Dublin is quite low on my scale. Portlandia(Heirloom Roses) and Joseph's Coat are by far #1 for height and blooms. They are both reaching 8 feet at only 8 months old, while Dublin is still only at 4 feet. The blooms are very small, giving me no more than 10 petals each. I'm starting to think its not really a Dublin Bay. Absolutely no scent.


On Jun 11, 2012, etherealsunshin from Wyanet, IL wrote:

I have this in a semi-shady spot and it tends to lean its blooms toward the north where it can soak up the afternoon sunset. It has beautiful, delicately petaled blooms in a dark true-red (no pink roses in my beds!!!). The flowers are very lightly scented and medium to large sized in its shady spot. This also gets northern exposure, so I wrap in straw and burlap for winter in zone 5a. I had to cut it to 12" two springs back after a brutal -20 (without windchill) winter, but I had zero dieback after our mild 2011-12 winter. It does seem like it would be semi cane-hardy in a normal zone 5 winter, but I baby it since it was a spindly little whip that survived a lot of abuse its first year (its sister didn't survive the cat's taste-test).
The canes are a bit leggy at times and take... read more


On Jun 4, 2004, Paulwhwest from Irving (Dallas area), TX (Zone 8a) wrote:

Bred in New Zealand. Won the following awards:

Auckland Rose of the Year 1993
Award of Garden Merit in 1993
Best Climber 1992
Climber twenty four times from 1999-2001
Polyantha Spray from the Medford Rose Society in 2000

Seed: Bantry Bay
Pollen: Altissimo