Protected Series:
Zone: 3
DARK GREEN ARBORVITAE
Thuja occidentalis 'Nigra' is commonly referred to as Nigra American Arborvitae or Black Arborvitae. It is a broadly pyramidal, upright evergreen shrub with flattened sprays of dense deep green foliage with good color retention through the winter months. This hardy selection is low maintenance and easy to prune. It grows slowly to about 20 feet tall with a 4 foot spread.
Nigra Arborvitae thrives in full to partial sun in rich, evenly moist, well-drained soils. It does not tolerate dry soil.
| PLANT | SIZE | TYPE | GALENA | ADD'L | DIG | SOON |
| THUJA OCC NIGRA | 5-6 ft | 41 | 0 | 175 | 0 | |
| THUJA OCC NIGRA | 6-7 ft | 108 | 0 | 548 | 0 | |
| THUJA OCC NIGRA | 7-8 ft | 64 | 0 | 42 | 0 | |
| THUJA OCC NIGRA | 8-10 ft | 96 | 0 | 117 | 0 |
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To help this plant settle in and thrive, we recommend these standard planting practices: Plant in fertile, well-draining soil, selecting a location that receives full sun to partial shade for the best foliage density and color. These evergreen species are adaptable, but they require consistent moisture to remain healthy and vibrant, particularly during the first few growing seasons until the root system is well established. Prune in late winter or early spring to remove dead wood or to lightly shape the plant, avoiding deep cuts into old wood where foliage will not regrow. Apply a layer of organic mulch around the root zone to conserve moisture and suppress weeds, taking care to keep the material a few inches away from the crown to prevent stem rot.
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