Genus consisting of a dozen evergreen conifers, originating in Asia, Europe and North America. It is a fairly fast-growing tree and can reach 10-15 meters in height; the erect stem carries a pyramidal or elongated crown, in the shape of a flame; the bark is brown-orange in color, in some years it tends to break into flakes that leave deep wrinkles on the surface. The leaves are small, very dense, shaped like scales, very similar to those of the cypress; they are intense dark green, in some species they become yellowish in winter. The plant produces small roundish pine cones, divided into flat sectors, in the center of each of which there is a pointed protuberance; they are black-blue, or light green, slightly pruinose, before breaking to release the small seeds they become brown. These conifers are widely used in gardens, both as single specimens, and to form impenetrable hedges. Numerous cultivars exist, even with dwarf growth.
Place in a sunny place; these trees can easily bear the shadow even if they develop better if they can enjoy at least 3-4 hours of direct sunlight a day. The tuie they are not very suitable in cities near the sea, as they cannot stand the salty air. They do not fear the cold. The young specimens need to be watered regularly, while the adult trees are generally satisfied with the rains, being able to easily withstand even long periods of drought.
There thuja occidentalis it is considered a rather resistant variety, even during the winter season. In fact, in winter it can even tolerate the most difficult temperatures, such as those between -20 ° and -15 degrees.
There thuja It is a genus of conifers belonging to the Cupressaceae family. They come exclusively from the North American continent and from Asia.
In places of origin they are widespread in the spontaneous state, but they have become very popular in the gardens because they are suitable for the creation of hedges, mainly because of their bearing. They grow very high, remaining compact at the base. They can also be used as a focal point in a mixed border or as an isolated specimen.
|Family and gender|
Cupressaceae, gen Thuja, 5 species
|Type of plant||Tree, conifer with persistent foliage, up to 50 m|
|Exposure||Full sun, half shade|
|Rustic||Very rustic, suitable for all of Italy|
|Ground||Rich, well-drained, sub-acid or acid|
|colors||White flowers (or pink in ornamental varieties)|
|Irrigation||Only in the first period|
|Composting||In spring, with a balanced granular product|
|colors||Leaves green, silvery, glaucous, golden or brown|
|uses||Hedge, barrier, vase, topiary, isolated specimen|