Rosa rugosa is a distinct species (from Japan) that is perfectly hardy. They have thick wrinkled or curly foliage, very distinct, with large, showy, single flowers of white and pink, and are covered in the autumn with large, conspicuous, red fruit. Immense masses of these are now planted and they make splendid low plantations to the margins of taller shrubberies. They are easily propagated from young or matured wood.