Blueberry Beret meadow sage bears bluish-violet flower spikes in late spring and again in late summer if spent flowers and seed heads are removed. It grows to about eighteen inches high and wide and prefers full sun and well-drained soils. blueberry beret is a useful plant for borders and in planters as the flowers provide a shot of intense color and a vertical element. Deer and rabbits are not attracted to meadow sage.