What A genus of over 150 species of shrubs in the Rosaceae family. Fewer than ten of these species were involved in the crossbreeding that ultimately produced today’s many thousands of garden roses.
Origins Most rose species are native to Asia, with smaller numbers being native to North America and a few to Europe and northwest Africa.
Season In the UK roses are in flower from as early as April through to November. Some roses start setting hips early in the season, but these only start to show colour as the temperatures begin to fall. The earliest hips to show are usually those of Rosa moysii. Size 30cm to 15m.
Conditions Most garden roses prefer heavy soil with the addition of well-rotted manure or garden compost. However, with careful selection of the species, you will find a rose suited to almost any soil and condition.
Hardiness Almost all roses are fully hardy, with a hardiness rating of RHS H7 (hardy to below -20 º C), and are suitable for gardens in USDA zones 4a-9b. However some are only frost hardy. *Holds an Award of Garden Merit from the Royal Horticultural Society. † Hardiness ratings given where available.