You're probably already aware of how vast the world of shrubs and trees is. There are countless varieties, types, and species, each with its own characteristics. From evergreen to deciduous trees, large specimens to shrubs, and fruit-bearing to non-fruit-bearing trees, the list is immense.
To avoid spending a lifetime listing them all, this article will focus on evergreen trees. These are very special plants with high ornamental value. Besides explaining what they are and their main characteristics, we'll also discuss some examples of the most famous species belonging to this group.
What are evergreen trees?
Before discussing some examples of evergreen trees, let's first explain what evergreen trees are . Broadly speaking, these trees are characterized primarily by the durability of their foliage. While deciduous trees lose their leaves when the cold weather arrives, evergreen trees retain their green foliage year-round.
In other words, the species belonging to this group do not lose all their leaves when temperatures begin to drop; only a portion of the foliage of these trees dies each year. Generally, the youngest shoots of these plants survive and eventually become part of the tree by fusing with the mature leaves and the new ones that emerge in spring. In this way, the crown never appears bare.
Thanks to the resilience and durability of their foliage, evergreen trees are very popular for decorating parks and gardens. They ensure that the space always looks a beautiful green. They can also be used to screen certain areas or to provide shade on hot summer days. It's worth noting that we can distinguish between two different types: broadleaf evergreens and needle-leaf evergreens. We will discuss these in more detail below.
Broad evergreen trees
This subcategory of evergreen trees is primarily characterized by its broad or wide leaves, as its name suggests. However, they retain their foliage year-round, as they are still considered evergreen species.
Most of these varieties originate from equatorial and tropical regions. There, the climate allows the trees to reach impressive sizes, varying heights, and elevations. Precisely because of their size, these plants absorb all the light and nutrients available in the area where they are planted. For this reason, vegetation rarely grows at their base, as it is unable to thrive.
While it's true that this type of tree is less abundant in the more temperate zones of the planet, we can still find some species. Some of the most notable are the olive tree and the holm oak. As we move towards colder regions, the number of broadleaf evergreen trees decreases considerably.
Needle-shaped evergreens
Another subcategory is that of needle-leaved evergreen trees. The main characteristic of species in this group is that their leaves are narrow, elongated, and scale- or needle-shaped. In most cases, the foliage is covered in resin. Pine, conifers, and yew are particularly prominent examples of tree species with these characteristics.
These evergreen trees are more common in colder regions, as they are more resistant to low temperatures and frost. For this reason, they are very frequent in countries like Siberia and Scandinavia, for example. We can also find this type of vegetation in the high mountains of America, Europe, and Asia, where the climate is generally quite cold.
What are evergreen trees?
There are many evergreen trees known today. To give you an idea, we'll briefly discuss some of the most famous species belonging to this group.
Scots pine ((Pinus sylvestris))
Among the most popular evergreen trees is the famous Scots pine. It is one of the most common tree species in the Northern Hemisphere. Its main characteristics include its needle-like, evergreen leaves, its height, and its wood. It can reach forty meters or more in height. It also has a very thick trunk. Furthermore, it is known for its rapid growth and longevity, which, among other things, gives it great economic and commercial importance.
Regarding pine flowers, the male ones are approximately three centimeters long and appear in spikes made up of individual yellow flowers. The female flowers, on the other hand, typically develop in erect, two-part cones that eventually hang from the tree.
The olive (European oil)
Another popular evergreen tree is the olive tree. In fact, it is the most prominent Mediterranean tree, highly valued since ancient times. This is no surprise, as it provides its delicious fruit, the olives, and the oil extracted from them. Indeed, this is its primary use: the cultivation of olives, both for the edible fruit and for producing the renowned olive oil. However, it is also a very popular plant in parks and gardens, due to its high ornamental value, its great resilience, and the ease with which it can be transplanted.
This is a fast-growing tree that can reach up to ten meters in height. The leaves of this species have a somewhat leathery texture and are a grayish-green color. The flowers are white and grow in clusters. The fruits of this tree can be round or oval in shape and range in size from large to small, depending on the variety.
Furthermore, to better understand the cultivation of trees such as the olive tree, it is interesting to learn more about ornamental trees and their care.
The cypress (Cupressus sempervirens)
The cypress is also one of the most prominent evergreen trees. It is widely used to decorate gardens and parks, either as a hedge or as a natural windbreak. Furthermore, various parts of this tree are used to treat ailments, while the wood is highly valued in sculpture, cabinetmaking, and carpentry.
This tree species can reach a height of up to thirty meters. Its leaves grow in clusters, are scale-like, and are typically about five millimeters long. When fully developed, the resulting foliage is dark green, compact, and dense. It is a dioecious species with flowers belonging to both sexes. The female flowers produce small cones that contain the seeds, while the male flowers are distinguished by their yellow color.
For optimal maintenance, it is advisable to know the appropriate tree pruning techniques for species such as cypress.
The magnolia (magnolia grandiflora)
Magnolia grandiflora , also known as the magnolia, is native to North America. Its primary use is ornamental, making it a highly valued species in gardens and parks. It is particularly prized for its large, striking white flowers, which also emit a wonderful fragrance. Flowering occurs in late spring and/or early summer. While the bloom is brief, the flowers appear successively, giving the impression that it is always in bloom.
This evergreen species can reach up to thirty meters in height and is slow-growing. It is a pyramidal tree with extensive branching from the base. Its leaves are alternate, bright green, and leathery. For more information on diseases that can affect this tree, it is recommended to consult the magnolia diseases section for proper management.
The cork oak (Quercus suber)
Let's continue with Quercus suber , better known as the cork oak. It's a medium-sized tree that's very popular for landscaping. However, it's also highly valued in the cork industry, as its bark is used to manufacture cork. It can reach up to 25 meters in height and produces the famous acorns, like many other trees in this family. Its leaves are alternate, leathery, and simple. They typically measure about seven centimeters long and are green, with the upper surface being darker than the underside.
It is interesting to know that its bark is highly valued, so you can learn more about trees with shallow roots that can complement cork oaks in a garden.
The Bottle Tree (Brachychiton populneus)
Finally, we must highlight a tree widely cultivated in Australia, the Brachychiton populneus , also known as the bottle tree. In Spain, it is commonly found in the Canary Islands and along the entire coast. It is a smaller tree than those mentioned so far, reaching a maximum height of ten meters under suitable conditions. Its leaves have long petioles and are bright green. The flowers are a beautiful pale pink and bell-shaped.
These are just a few examples of the most popular evergreen trees today, but there are many more species and varieties. I hope this information has been interesting for you.