Japanese rose and ordinary rose from same species?

why do they call it japenese rose?are they from same species. Japanese rose is so small and it does not look like the ordinary rose at all.. and it does not even smell like rose.

Japanese rose and ordinary rose from same species?
Japanese Rose is Kerria japonica in Latin, ofcourse, Rose is Rosa in Latin. Both belong to the same family, Rosaceae.





The Rosaceae family is one of the largest plant family (at least for cultivated plants for the North American continent).





Kerria and Rhodotypos are pretty closely related. They are probably closer to Spirea than Roses.





None of the plants that I just mentioned have much of a fragrance, if any. All are easy to grow, in full sun to light shade. Kerria and Rhodotypos are tolerant of more shade.





I hope that this helps


Good luck-
Reply:Never heard of "Japanese" rose .





"Same species"?





Do you mean that you have different roses on the same plant ? If so , you have a grafted rose, and are getting suckers from the root stock . If this is the case , follow the stems back to below the graft ( the knobby thing) and cut them off .





The graft should be planted ~4" below ground . If this isn't done , suckers usually result .If your graft isn't buried, bury it by adding soil . In some varieties, roots will grow , and you'll get in effect, an "own-root" plant , that is stronger, and less likely to die .





If the small , non-fragrant rose is all you have , it might just be what it is ( not all are large, or fragrant) , or the original plant (top) has died and all you have left is rootstock . Whichever it is , just a matter of personal preference , whether to keep it or not . If you don't like it ( sounds as if you don't), get rid of it .





If you decide to replace it with another rose, move the new plant at least 3', or dig out and replace the soil in a 3' radius . Roses exude something ( not sure what yet) that kills subsequent roses, for three yrs.





Good Luck