The Holly Castle Wall, 'llex x 'Castle Wall' (PP14,308), a Proven Winners selection, is one of the new blue hollies that are great for foundation plants. Castle Wall is compact and pyramidal in form The narrow form makes them great for hedges, foundation plantings, or as a specimen. The lustrous green foliage provides season long interest. Castle Wall will produce bright red berries in the fall and they will add colr to the winter landscape.