'Arnold' rose Description
Photo courtesy of LaBrea/JoeO'Connell
Medium red Hybrid Rugosa.
Registration name: Arnold
Hybrid Rugosa, Species / Wild.
Scarlet or violet-red. Strong fragrance. Average diameter 2.25". Large, single to semi-double, in small clusters bloom form. Occasional repeat later in the season.
Armed with thorns / prickles, upright. Dark green foliage. 5 to 7 leaflets.
Height of 4' to 6½' (120 to 200 cm). Width of up to 4' (up to 120 cm).
USDA zone 6b through 9b (default). Hardy. produces decorative hips.
Differences of opinion about parentage, see References.
[Rosa x arnoldiana Sarg. in "Bulletin of popular information: Arnold Arboretum Harvard University Bulletin of popular information": Arnold Arboretum Harvard University; 1915 38 1919.
Rosa x arnoldiana Sarg. (1919) applies to crosses between R. rugosa and hybrid perpetuals, which Sargent classified as R. borbonia Desportes. The "specification" of Bourbons and Hybrid Perpetuals has been subsquently rejected. At most, R. x arnoldiana appears to be a synonym of 'Dawson's Hybrid Rugosa,' and does not represent a hybrid of two species at all. See References.]