Tree Thuja occidentalis 'Nigra' [Nigra Eastern Arborvitae] 'Nigra' is a pyramidal to conical form with handsome deep green foliage that holds its color through winter. One of the best plants for screening in moist, well-aerated soils. Bagworms can be a problem. Subject to several other insect pests, all of which usually can be controlled with timely spraying. Deer may feed on foliage.
Shrub Thuja occidentalis 'Ohlendorffii' [Dwarf Eastern Arborvitae] 'Ohlendorfii' is a broadly mounded cultivar that exclusively has the needle-like juvenile foliage. Bagworms can be a problem. Subject to several other insect pests, all of which usually can be controlled with timely spraying. Deer may feed on foliage. Winter color can be poor.
Shrub/Tree Thuja occidentalis 'Pyramidalis' [Pyramidal Eastern Arborvitae] 'Pyramidalis' has a narrow pyramidal form and brightly-colored, soft leaves. One of the best plants for screening in moist, well-aerated soils. Bagworms can be a problem. Subject to several other insect pests, all of which usually can be controlled with timely spraying. Deer may feed on foliage. Winter color can be poor (susceptible to winter burn).
