Emerald is a vigorous bush with a growth habit midway between upright and spreading. Flowers open uniformly and it produces abundant leaves even after mild winters. Emerald is very capable of carrying heavy crops. Berries are large and firm with a good picking scar and have a sweet flavor. Color is medium to dark blue. There are no real problems with Emerald, root rot, stem blight and cane canker have not been too serious.