Shrub Rose, Hybrid Kordesii Rose 'Frontenac'

Rosa

Family: Rosaceae (ro-ZAY-see-ee) (Info)
Genus: Rosa (RO-zuh) (Info)
Cultivar: Frontenac
Additional cultivar information:(PP9210; Explorer Series Collection)
Hybridized by Svejda
Registered or introduced: 1991
» View all varieties of Roses

Class:

Cluster-flowered (incl. Floribunda & Grandiflora)

Shrub

Height:

36-48 in. (90-120 cm)

4-6 ft. (1.2-1.8 m)

Spacing:

24-36 in. (60-90 cm)

Hardiness:

USDA Zone 2b: to -42.7 C (-45 F)

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:

Deep pink (dp)

Bloom Shape:

Double

Flower Fragrance:

Slightly Fragrant

Bloom Time:

Late Spring/Early Summer

Mid Summer

Habit:

Shrub

Patent Information:

Patent expired

Other Details:

Resistant to black spot

Resistant to mildew

Resistant to rust

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)

6.6 to 7.5 (neutral)

Propagation Methods:

From softwood cuttings

Foliage Color:

Unknown - Tell us

Bloom Characteristics:

Unknown - Tell us

Water Requirements:

Unknown - Tell us

Where to Grow:

Unknown - Tell us

Gardeners' Notes:

1
positive
1
neutral
0
negatives
RatingContent
Positive

On Sep 1, 2014, coriaceous from ROSLINDALE, MA wrote:

This rose covers itself in bloom, and has good repeat. It is the most underrated of the Canadian Explorer roses. Should be more commonly grown than it is.

Exceptional disease resistance.

This was hybridized by Felicitas Svejda in 1981. Introduced in Canada in 1993 by Agriculture Canada L'Assomption Quebec.

USPP 9,210 25 July 1995.

Neutral

On Nov 7, 2006, Redkarnelian from Newmarket, ON (Zone 5a) wrote:

Canadian Explorer series rose.

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