Varieties and How to Plant Thuja
There are three species most widespread: Thuja green giant, which is a hybrid of Thuja plicata, and Thuja standishii– the most popular cultivar that reaches a height of 18 to 25 m and has very rapid growth and ornamental use. The tops of its branches are solid to the touch and its foliage is mildly fragrant.
Thuja occidentalis, also called white cedar is famous for its amazing ornamental foliage. It’s a beautiful small tree that gives a rustic appearance. It grows from 10 to 20 meters high.
Thuja plicata is also referred to as giant or western arborvitae. It grows up to an amazing height of 55 to 60 m (180 to 200 ft).
It can be propagated from seeds, cuttings, and air layering. Propagate in summer using fresh cuttings.
Position for Growing Arborvitae
Thuja grows easily in both full sun and partial shade. However, exposure to cold harsh winds can be damaging to young plants.
Thuja grows in most soil types. But the best soil for it is fertile soil that has the ability to retain moisture. It also tolerates very chalky soils.
Water thuja deeply. The soil around it should be kept moist and covered, constantly, from a mulch of organic material.
It needs regular fertilization to grow fast. Feed it with balanced liquid fertilizer at the beginning of growing season to kick start the growth.
It doesn’t require pruning as it naturally grows in a columnar shape. Although if you are growing this for hedge prune regularly to maintain shape. It can tolerate excessive pruning without any problem.
Pests and Diseases
Its main problems are bark beetles, canker diseases, and poor water management.