Nugget Ninebark Nugget Ninebark, introduced by SDSU in 1990, is the shrub used in the Maze Garden. Nugget is a dense compact shrub of low to medium size and texture. Its foliage is a deep golden yellow with a hint of bronze on new growth. Nugget is quick to establish. New growth is a deep golden yellow, turning lime green at maturity.
Mature branches are dark brown with shedding bark.
Fall foliage color, lasting several weeks, is a deep bronze externally and yellow internally.