Nigra American ArborvitaeThuja occidentalis 'Nigra'
Nigra' arborvitae is an upright, cone shaped, narrow evergreen with flattened sprays of dense, deep green foliage and good winter color. It is a hardy, relatively low maintenance tree and takes pruning well. It makes an excellent vertical accent, wind or privacy screen, natural fence or hedge. A cultivar of our native North American arborvitae, 'Nigra' grows slowly to 20'-30' high with a spread of 4'-10 wide. Plant 3' apart for a hedge. It adapts to a wide range of soils, but prefers full sun to partial shade and moist, well drained sites. Avoid dry soil and protect from drying winds. Zones 3-7.