American arborvitae (Thuja occidentalis 'Emerald') THOO-yah oks-ee-den-TAL-is Synonyms:  'Smaragd' Genus:  Thuja

This cultivar is a compact, evergreen, pyramidal tree that retains its glossy, bright green foliage throughout the year, making it a valuable hedge plant or specimen.

Noteworthy Characteristics: 

This plant tolerates a wide range of soils and likes humid weather with regular rain. The foliage becomes less dense if planted in too much shade.

Care: 

This cultivar is easily grown in average, well-drained soil in full sun to part shade. Water deeply in hot and dry weather and mulch the root zone. Prune in early spring before onset of new growth. If grown as a hedge, trim in spring and late summer if desired. Keep trained to a single leader to avoid ice and snow damage.

Propagation: 

Insert semi-ripe cuttings in late summer.

Problems: 

Caterpillars, bark beetles, weevils, mites, and scale insects are common, as are butt rott, twig dieback, Botrytis, mushroom root rot, and needle blights.

Overview

Height 6 ft. to 10 ft. Spread 3 ft. to 6 ft. Growth Habit Clumps Growth Pace Moderate Grower Light Full Sun to Part Shade Moisture Medium Moisture Maintenance Low Characteristics Native, Showy Foliage Foliage Color Evergreen Uses Screening, Specimen Plant/Focal Point Seasonal Interest Winter Interest Type Trees