Categories Shrubs & Trees | Thuja occidentalis “Rheingold” Thuja occidentalis “Rheingold” Common name(s): Arborvitae, White Cedar, Swamp Cedar and others Synonyme(s): N/A Family: Cupressaceae Origin: only cultivated. Thuja occidentalis is native to Canada and USA. More infos: Thuja occidentalis –> Related plants:Chamaecyparis obtusa Chamaecyparis pisifera Chamaecyparis pisifera “Baby Bleu” Platycladus orientalis Thuja occidentalis Thuja occidentalis “Danica”