Grandiflora Rose 'Scarlet Knight'


Family: Rosaceae (ro-ZAY-see-ee) (Info)
Genus: Rosa (RO-zuh) (Info)
Cultivar: Scarlet Knight
Additional cultivar information:(aka MEIelec, Samourai)
Hybridized by Meilland
Registered or introduced: 1966
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Cluster-flowered (incl. Floribunda & Grandiflora)


36-48 in. (90-120 cm)


Unknown - Tell us


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)

USDA Zone 11: above 4.5 C (40 F)

Bloom Color:

Medium red (mr)

Bloom Shape:


Tea shaped

Flower Fragrance:

Slightly Fragrant

Bloom Time:

Blooms repeatedly



Patent Information:


Other Details:

Unknown - Tell us

Pruning Instructions:

Blooms on new wood; prune early to promote new growth

Soil pH requirements:

Unknown - Tell us

Propagation Methods:

From herbaceous stem cuttings

From woody stem cuttings

From softwood cuttings

From semi-hardwood cuttings

From hardwood cuttings

By grafting

By budding

By simple layering

By air layering

By tip layering

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:

Atlanta, Georgia

Protection, Kansas

Knoxville, Tennessee

Gilmer, Texas

North Bend, Washington

Seattle, Washington

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Gardeners' Notes:


On Dec 11, 2010, Hamchuk from Weaverville, NC (Zone 6b) wrote:

ATL - 7B. I bought this plant bare root from a big box retailer, and I have to say that while the blooms are beautiful, red with a blue tint, they have not fared well here in our full sun large container garden. The black spot, the aphids, the japanese beetles have all taken their toll, and they usually look, honestly, absolutely dreadful. My husband and I try to garden using environmentally-gentle methods, and despite weekly neem oil treatments and a nearby beetle bag this rose has consistently looked more dead than alive.

I purchased two at the same time, and decided to plant the second one at our community garden, where it received even less care than here at home. It appeared to die off in the fall from the accumulated neglect, but now that the bugs are gone it is sudde... read more


On May 9, 2009, Leehallfae from Seattle, WA wrote:

Scarlet Knight: Spacing, about 18 to 30 inches apart. Average size is 4 feet by 4 feet, and cold hardiness is -10F to -20F. Plant in full sun, where it will receive at least 6 hours of direct sunlight Daylight Savings Time.


On Oct 11, 2004, Paulwhwest from Irving (Dallas area), TX (Zone 8a) wrote:

Bred in France. Won the All-America Rose Selection in 1968, the Madrid Gold Medal in 1966, and the Court of Show Honor in 1999.

Seed: Happiness Independence
Pollen: Sutter's Gold