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Care of the plant Thuja occidentalis or Northern white cedar.

Care of the plant Thuja occidentalis or Northern white cedar

The genus Thuja, family Cupressaceae, includes 5 species of conifers native to North America and the Far East. The species are: Thuja occidentalis, Thuja plicata, Thuja standishii, Thuja koraiensis and Thuja sutchuenensis.

Common names: Northern white cedar, Eastern white cedar, Arborvitae, American Arbor-Vitae or Siberian Arborvitae. This species is native to Canada and nothern USA.

They are evergreen trees with a narrow pyramidal bearing that reach 20 meters in height. The leaves are scale-shaped, deep green in color, and produce a pungent odor; there are numerous varieties of other colors. The elongated fruits are light brown in color and measure up to 0.8 cm in length.

These slow-growing plants are used as isolated specimens and to form hedges. They resist pollution from cities very well.

Thuja occidentalis prefers full sun exposure but can also grow in semi-shade. They resist frost well.

The soil can be normal garden soil with coarse sand and abundant organic matter.

Water regularly so that the substrate never dries out completely and always stays moist. They do not resist drought.

Fertilize with compost or manure in the fall.

They can be lightly pruned in late winter to keep them compact.

If they suffer drought, they are attacked by aphids but they do not usually present serious pest and disease problems.

They are propagated from seeds sown in late winter in a sandy substrate and by cuttings in summer.

Images of the plant Thuja occidentalis or Northern white cedar

Thuja occidentalis
Thuja occidentalis
Thuja occidentalis
 

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