Popular varieties of oriental arborvitae and their description
Few trees and shrubs can match the arborvitae in decorative qualities. And this is not surprising - sometimes, a tree with a correctly trimmed crown can be mistaken for artificial. Indeed, looking at such beauty it is difficult to imagine that nature is capable of such a miracle. One of the varieties of the plant is Thuja orientalis, or biota.
The main differences from other thuja
In the open air, the thuja east can normally grow only in the southern regions, since it tolerates frosts poorly. But the tree is more drought tolerant than other species.
Ploskovetochnik, platikladus, biota, eastern thuja - all these names refer to one plant of the Cypress family, the classification of which biologists have repeatedly reviewed. The last of the names, eastern, is perhaps the most famous, although at present in the botanical classification the tree belongs to the monotypic genus Ploskovetochnik. Eastern thuja can be massively found in Crimea. But in regions located north of the latitude of the southern suburbs, biota will freeze in winter.
The needles of platycladus can be not only green: shades are quite common, starting from golden, and ending with saturated orange, almost chocolate. And this is not the result of the disease, but a natural natural color, for example, the needles of the Morgan variety in winter acquire a rich brown hue.
The surest sign that visually distinguishes the eastern thuja from the western is needles. The needles of representatives of both genera (Thuja and Ploskovietochnik) have a stomatal gland. This organ in the eastern variety resembles a hollow, forms a recess that can be seen without magnifying devices. But in a Western relative, this gland, on the contrary, is cone-shaped, convex in shape.
Did you know? Adult flatworm can grow up to 10 m tall. At the same time, its crown reaches a diameter of almost 4 m, and the trunk - 1 m.
In addition, adult plants have such differences:
- the fruits of the western arborvitae, megastrobiles, are small cones, consisting of only a few scales. Seeds are in dry cocoons with wings;
- Platycladus megastrobil is dense, fleshy and juicy, saturated green, which changes to brown when the fruit ripens. Its surface is covered with hook-shaped growths, and the seeds are the size of a large grain of rice.
As for the conditions for growing trees, there are also differences. Thuja, including the western one, prefers to grow on fertile, slightly acidic soils (pH 5.0–6.5). But biota grows better on calcareous soil (pH 6.5–7.5). Moreover, this plant feels quite well on sparse soil, the main thing is that it be warm and conduct water well. In addition, the ploskadochnik needs sun, most of its varieties can not tolerate the shadow.
Description and characterization of varieties
The following is a description of the most popular varieties of squamous. Among the presented varieties there are trees for every taste: dwarf and tall, with needles of traditional green color, and with a crown almost orange. But all the varieties described below are united by one detail - they belong to the eastern type of thuja.
The book is compact in size, which makes it very popular as a decorative element in landscape design. The height of the adult thuja reaches 3 m, and the average diameter of the crown is about 1.4 m. The variety has emerald needles, which is in perfect harmony with plants that have bluish needles.
Video: thuja book
The book looks great in a hedge, due to its size and shape. It goes well with other conifers, such as yews, cypresses, spruce.
Morgan is a representative of the eastern type of Australian breeding. The needles have an interesting property: it changes color, depending on the time of year - bright green or lemon in the summer and ocher in the winter.
Important! In winter, the tree requires mandatory shelter, since it is characterized by low frost resistance, but Morgan tolerates a dry summer normally.
Dwarf variety bred by Polish breeders. The shape of the crown is columnar, the forming branches are directed upward, almost parallel to the tree trunk. The remaining branches grow in the shape of a fan, mainly in the vertical plane.
Justin has a dark emerald needles and is highly resistant to subzero temperatures. Frost tolerance, as well as the size of the tree (easy to hide from severe frosts) allow you to grow Justinka in latitudes, where other eastern thuja practically do not grow.
Like most dwarf trees, it looks great in the design of gardens, parks, alleys. The hedge grown from Justinka biota looks fabulous: neat one and a half meter tall beautifully shaped trees in the form of columns frame the stone-paved garden paths.
A beautiful decorative tree that grows no more than 10 cm per year. Aurea Nana is a dwarf version of the Aurea thuja. The needles have a golden hue, hence the name of the variety (Aurum - gold with lat.). Crohn's shape resembles a spindle.
Did you know? The flatworm belongs to the monotypic genus, while the western thuja is a separate genus, which includes five species. That is, from the point of view of botany, the eastern and western thuja are not two different species, but plants of different genera of the same Cypress family.
Ordinary Aurea, unlike the dwarf variety, belongs to the western type. A taller tree grows faster, better tolerates frosts, its crown is not so dense.
But Aurea Nana is perhaps the only absolutely decorative thuja on this list. In landscape design there are no restrictions or prohibitions for this variety. It looks organically with any plants of various heights, the main thing is that they do not overshadow the thaw.
Thuja eastern Pyramidilis Aurea (not to be confused with the western variety of compact Pyramidilis), as the name implies, has a crown in the shape of a pyramid with golden needles. The tree is tall, its growth can reach up to 4 m, while the diameter of the crown does not exceed 1.5 m. Annual growth is about 0.1 m. The needles throughout the year have a beautiful lemon tint.
Unlike most other varieties, Pyramidilis normally feels in the shade. For this reason, the variety grows well next to taller trees, for example, it looks great in group plantings around a larger spruce or pine.
You can plant this thuja near the house, which will cast a shadow on it during most of the daylight hours. But the bright sun rays Pyramidilis tolerates worse in the summer and early spring, he will not interfere with protection from them, in order to avoid burns.
The color of the needles recalls the previous variety - saturated yellow-green with a golden tint. The name of the variety, which is translated into Russian as the "Golden Minaret", is a very accurate description of the color and shape of the tree. In the event that the thuja grows in a shaded place, the needles acquire a dense green hue.
Important! Biota of any variety is a thermophilic plant and does not tolerate frosts. Even those varieties that are considered winter-hardy, normally practically do not grow north of Ukraine.
All of the above varieties of thuja are able to decorate with themselves a small and cozy personal plot, and a spacious city park or a wide boulevard. These trees do not differ too demanding or capricious disposition, however, they still need to create the necessary minimum conditions for growth and development.