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  2. Garden roses - Wikipedia

    en.wikipedia.org/wiki/Garden_roses

    Shrub roses are a rather loose category that include some of the original species and cultivars closely related to them, plus cultivars that grow rather larger than most bush roses. [3] Technically all roses are shrubs. In terms of ancestry, roses are often divided into three main groups: Wild, Old Garden, and Modern Garden roses, with many ...

  3. Rosa 'Knock Out' - Wikipedia

    en.wikipedia.org/wiki/Rosa_'Knock_Out'

    After eight years of testing, Star Roses introduced the new rose into the United States in 2000 under the marketing name of 'Knock Out'. The extremely hardy rose cultivar was successful that first year, and has become one of America's top selling roses. 'Knock Out' is also the original rose variety of a large family of 'Knock Out rose varieties ...

  4. Rosa davidii - Wikipedia

    en.wikipedia.org/wiki/Rosa_davidii

    Rosa davidii is a winter hardy shrub, growing to a maximum height of 4 metres (13 ft). The narrow imparipinnate leaves have a length of 7 to 14 cm (2.8 to 5.5 in) and generally consist of seven or nine - rarely five or eleven - leaflets.

  5. Rosa 'John Davis' - Wikipedia

    en.wikipedia.org/wiki/Rosa_'John_Davis'

    Her first project was researching cereal grains, but later she began working with ornamental plants. Svejda was given a new project in 1961 to create a series of winter hardy roses which would thrive in the coldest regions of Canada, with sub-freezing winter temperatures of -50 C, and would also flower regularly during Canada's short growing ...

  6. Rosa × alba - Wikipedia

    en.wikipedia.org/wiki/Rosa_×_alba

    Rosa × alba, the white rose of York, is a hybrid rose of unknown parentage [1] that has been cultivated in Europe since ancient times. [2] It may have originally been grown mainly for the sweet scent of the flowers, but is now also used as a winter-hardy garden shrub. [ 2 ]

  7. List of Award of Garden Merit roses - Wikipedia

    en.wikipedia.org/wiki/List_of_Award_of_Garden...

    This sortable list allows users to view roses alphabetically by breeder, colour, etc. - as well as ordering them by size if required. Clicking on the double arrow a second time reverses the alphabetical order.