6. 'Peace' has been called the most famous rose of the 20th century; discovered in 1935, it was named after the end of World War II. It has unusual pink-tinged yellow petals and a sweet fragrance, and grows from 4 to 6 feet wide in zones 4 to 9. Aside from being a low-maintenance rose, it's notable for its extra-large, showy blooms that span 5 to 6 inches across.
Grow roses? Please show us your garden!