|'Allegro' is tightly-dense and robust, bearing crimson flowers. A densely branched, mat-forming evergreen ground cover with long clusters abundant, showy white or pink urn-shaped flowers into fall. Rich green summer foliage turns bronze-green in winter. Ideal for rock gardens or along walkways. The only true Scotch heather. Beware: dogs seem to favor Scotch heather as much as fire hydrants.