CASTLE WALL is a male evergreen holly with a compact, upright, broad-columnar form that typically matures 5-8' tall and to 3-4' wide. It is a dense shrub that features small, oval to elliptical, serrated, glossy deep green leaves (to 1.5” long). Greenish-white flowers in clusters of 3-6 appear in May and are generally inconspicuous. CASTLE WALL was discovered in 1998 in a selected breeding program in Barmstedt, Germany from a cross of Ilex aquitolium ‘Pyramidalis' and Ilex x meserveae 'Blue Prince'. U. S. Plant Patent PP14,308 was issued on November 18, 2003.