High Traffic (Thornless or almost thornless Roses)_ When planting roses in a high traffic area, one of your top concerns is safety. Try the Zephirine Drouhin Climbing Rose. This rose is a climber, has long, thornless canes packed with repeat blooming bright pink flowers all summer. ...easy care and sweet smelling. ...old rose variety, but still one of the best. Great rose to grow over a porch or arbor. and it will grow in shade! Hardy zones 5-9.