Shrub roses offer gorgeous clusters of flowers and fragrance on easy-care, disease-resistant plants. Like other roses, shrub roses prefer full sun or a partially shaded area that receives several hours of direct sunlight each day. Their clusters of blooms open throughout the summer months on sturdy, robust stems. Because they're less fussy than traditional hybrid tea roses, shrub roses are popular as stand-alone plants in the garden or grouped together to form an informal hedge. The flowers add pops of color to the landscape and can also be cut and used for fresh floral arrangements.