|'Betty Ashburner' is an ornamental, spreading and arching, low-growing, evergreen shrub with dark red thorns. Leaves are broad, ovate, glossy green, up to 2 1/2" long, with 5 shallow lobes and a glaucous underside.
Summer borne pure white, saucer-shaped, 3/4" wide flowers are held in axillary racemes. Grows to 12" tall and indefinitely wide. The Rubus genus is made up of flowering, and better yet, fruiting (yum) shrubs, including raspberries and blackberries, which may or may not have thorns.
There are both native and ornamental selections, some evergreen, some deciduous. Most brambles do well in full to partial sun and tolerate infrequent watering.