'Chi Chi' or 'Tschi Tschi' is a dense, small tree with intriguing, corky, downward projections on trunk and branches, visible as small, pointed knobs in early age. It slowly grows to a shrubby form, developing the unusual "stalactites" in older age. (Reportedly, tschi tschi translates as breast.) Its fall color is the beautiful yellow-gold that all Ginkgos boast.
Mature size: 10 ft T x 5+ ft W
Minimum temperature: -30° F