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Eye cypress
Thuja koraiensis
Growth Characteristics of Thuja koraiensis Thuja koraiensis is an evergreen conifer native to Korea, particularly in the mountainous regions of the central area. Its growth is relatively slow, and mature trees reach a height of 10 to 20 meters. The leaves are scale-like and arranged densely, giving them a soft appearance. It is resistant to cold and strong winds, and also possesses excellent shade tolerance and drought resistance. Propagation Methods Thuja koraiensis is primarily propagated by seeds and cuttings. Seeds mature in the autumn, and it is best to collect them around November. Seeds can be sown immediately after collection or in the following spring. Spring is the optimal time for cuttings; take cuttings 10 to 15 cm in length from healthy twigs and plant them in a potting mix of sand and soil to encourage rooting. Cultivation Methods Thuja koraiensis prefers well-drained soil and thrives in slightly acidic soil. It thrives in partial shade as well as in sunny locations. Since root rot can occur in poorly drained areas, it is important to improve drainage by using pots or heavy stakes. During the growing season, apply lawn fertilizer according to weight. Uses in the Garden Thuja orientalis is primarily used in gardens for border planting, windbreaks, or as an ornamental plant. It is particularly popular as a landscaping tree because it can be pruned into various shapes as needed. It is resistant to pests, diseases, and pollution, making it easy to cultivate even in urban areas. Important Pests and Control Methods Thuja orientalis is relatively resistant to pests and diseases, but brown leaf blight or other pests may rarely occur. In the early stages of infestation, cut off and burn diseased leaves or branches, and use fungicides as necessary to prevent spread. Pests such as aphids may be present; in this case, control them by washing with water or using pesticides. For prevention, it is important to periodically inspect the condition of the tree and keep the surrounding environment clean.
Plant Type
Plant Family
Cupress family
Height
10∼20m
Spread
20∼30cm
Colors
yellow
Bloom Period
May
Water Needs
commonly
Exposure
Sunny
Freezing Resistance
-30°C
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