'RSM K1' Rose

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'RSM K1' rose Description

My HMF:

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Photo courtesy of Margit Schowalter

Synonyms:

• 73768903

HMF Ratings:

6 favorite votes.

Origin:

Bred by Henry H. Marshall (Canada, 1973).

Class:

Hybrid Rugosa.

Bloom:

Rose-pink. 5 to 15 petals. Average diameter 3.25". Moderate, spring or summer flush with scattered later bloom.

Habit:

Medium, arching. Medium, matte, medium green, wrinkled (rugose) foliage. 7 leaflets.

Height: 3' to 5' (90 to 150cm). Width: 4' to 6' (120 to 185cm).

Growing:

USDA zone 2b through 9b. Very hardy. vigorous. Disease susceptibility: disease resistant, susceptible to rust .

Patents:

Patent status unknown (to HelpMeFind).

Ploidy:

Tetraploid

Parentage:

Rosa rugosa 'Alba' × RSM 89

Notes:

According to the International Rose Registrations Supplement 4, K1 was used in the breeding of 'Hope for Humanity'.

Its Morden seedling number, 73768903, contains, in order, the year of the cross, the seed parent number, the pollen parent number, and selection number of that seedling from all the seedlings grown from that cross.

Parent #76 is Rosa rugosa alba. Parent #89, a rugosa hybrid, is the seedling selection 6734P002, an unnamed seedling from a 1967 cross that included R. arkansana and R. rugosa.

K5, a sibling of K1, has the seedling number 73768902.