Photo by Melody

PlantFiles: Hybrid Kordesii Rose
Rosa 'John Cabot'

Family: Rosaceae (ro-ZAY-see-ee) (Info)
Genus: Rosa (RO-zuh) (Info)
Cultivar: John Cabot
Hybridized by Svejda; Year of Registration or Introduction: 1978

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2 members have or want this plant for trade.


4-6 ft. (1.2-1.8 m)
6-8 ft. (1.8-2.4 m)

4-6 ft. (1.2-1.8 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)

Bloom Color:
Medium red (mr)

Bloom Shape:

Flower Fragrance:
Very Fragrant

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 very thorny

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

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

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By echoes
Thumbnail #1 of Rosa  by echoes

By chicochi3
Thumbnail #2 of Rosa  by chicochi3

By chicochi3
Thumbnail #3 of Rosa  by chicochi3

By linjasar
Thumbnail #4 of Rosa  by linjasar

By linjasar
Thumbnail #5 of Rosa  by linjasar

By chicochi3
Thumbnail #6 of Rosa  by chicochi3

By chicochi3
Thumbnail #7 of Rosa  by chicochi3

There are a total of 15 photos.
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3 positives
2 neutrals
No negatives

Gardeners' Notes:

Positive Karmikael On Mar 12, 2013, Karmikael from Asikkala
Finland wrote:

I have this plant growing in Finland Scandinavia and it grows beautifully and blooms throught out the summer. It does well even in our very difficult winters with degrees -30 celsius. I would like to make more of them from winter cuttings but so far my experience have failed. is there something special that it needs when trying to get roots for cuttings?

Positive valliebeth17 On Jun 25, 2011, valliebeth17 from Crown Point, NY (Zone 4b) wrote:

One of the best if you want a climber for cold climates. It does beautifully here in zone 4, and I've collected three now. THe bright pink pops from a distance, and it continues to bloom throughout the summer.

Neutral ospreyhome On Aug 29, 2009, ospreyhome from Chiloquin, OR wrote:

I wasn't expecting this rose to be so wide but it is a large shrub rose which is grown a climber because it is so large. I love it and it has recurrent bloom throughout the summer. My husband recently built a trellis of sorts, more like a cage to contain it as it is sending canes across the stream bed next to our man-made pond. I love this rose and it grows with little care. The first couple of years, it grew without any fertizer. All of these Canada (Parks and Explorer series) roses grow well for me and I now only grow roses which are grown of their own roots. I live in the Klamath basin which is at 4200 ft. elevation, in south central Oregon, east of the Cascade range. We are subject to late spring, killing frosts and these roses (I have a number of them) suffer little if no die off even though the canes have begun putting off new growth. All I have tried so far do well in my area.

Positive torachan On Jul 24, 2005, torachan from Aurora, CO wrote:

This rose takes a few years to become establishes but thrives regardless of poor soil, drought, and blizzards. It can become huge, as in 8' x 8' and now scrambling into an aspen tree. The spring flush is amazing and it will repeat through the summer with a nice fall flush. It responds well to fertilizer and reliable water but can do nicely with neglect as well. Under the right conditions, it will also have a nice fragrance although most literature notes it has little or no scent.

Neutral Paulwhwest On Jun 14, 2004, Paulwhwest from Irving (Dallas area), TX (Zone 8a) wrote:

Bred in Canada. One of the Explorer Series.

Seedling of R. kordesii


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

Golden Lake,
Anchorage, Alaska
Eagle River, Alaska
Fayetteville, Arkansas
Aurora, Colorado
Millsboro, Delaware
South Amana, Iowa
Helena, Montana
Crown Point, New York
Elba, New York
Chiloquin, Oregon
Sarver, Pennsylvania

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