What a clever and easy idea. Mom's gone now and it would be a fun way to share her favorite Rose bushes with my Sibs. Grow Beautiful Rose Bushes from Trimmings with the Help of Potatoes (from Insanely Clever Gardening Tips Ideas")
trellis across raised beds (more room for the beds and adds a pretty little 'tunnel' under the future plantings! OR put the trellis over the bed, plant at either end and then plant lettuce or spinach in the shade beneath the trellis!