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Lush green trees throughout Chicago’s beautiful parks and gardens make the skyline even more scenic

The spring season is an exciting time in the Chicago area because residents are treated to warmer weather, more hours of sunlight, and blooming trees and flowers all at once.  Now that the spring weather has finally arrived in Chicago, residents can expect to see the flowers and foliage of our trees and shrubs fill out over the next several weeks.  One of the many unique characteristics about Chicago that makes it such a great city is the expansive urban forestry throughout the city and its suburbs, and the wide diversity of tree species it includes.

Before Chicago was incorporated as a city in 1837, there were only 22 different tree species in the area.  It may be surprising to know that according to the Morton Arboretum, there are now 218 officially recorded tree species just in the city of Chicago alone.  That is a significant increase in tree species in a span of about 180 years.  The biggest factor in this increase is the residents of Chicago themselves as most of Chicago’s trees are found on residential property.  Many residential areas in Chicago are tucked away from the busiest and dirtiest streets where the air is warmer and the soil is richer in nutrients.  This creates ideal conditions for many of Chicago’s most common trees to thrive.

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Hendricksen Tree Care offers professional tree care services throughout the Northwest Chicago suburbs such as Glenview & Northbrook, IL

The diversity of tree species in Chicago and its suburbs is part of what makes the spring season so special in this area.  However, in order to keep Chicago trees beautiful, they need the proper care and protection from diseases, pests, and other factors that can cause harm.  At Hendricksen Tree Care, our professional arborists are compassionate about caring for the many different tree species in the Chicago area.  We provide complete tree services, including tree care, maintenance, and pruning, for trees on residential and commercial properties.  Our arborists have extensive knowledge about the most common trees in the area and can effectively treat trees affected by insects or disease.

One of the ways that we at Hendricksen Tree Care would like to show our commitment to caring for the trees of Chicago is to feature a blog series about the most common types of trees in the area.  Knowing about the tree species on your property can help you take better care of them so that they live long and healthy lives.  Below are brief descriptions of the most common tree species in the Chicago area.  In the coming weeks & months, we will feature a different one of these tree species in its own tree blog that will include in-depth information about the species and the best ways to provide care.

If you do need a professional arborist to provide tree care services in the north or northwest Chicago suburbs, please do not hesitate to contact Hendricksen Tree Care.

Oak Trees

Before the development of Chicago, oak trees were the most common trees in the area.  These large trees provided food and shelter for much of the local wildlife.  Oak trees need plenty of space to grow so as Chicago and its suburbs developed, these trees became scarce.  The only way new oak trees will appear in the Chicago area is if they are planted.

There are many species of oak found throughout the world in the northern hemisphere.  Oaks include both deciduous and evergreen species and many oak species can grow up to 80 feet tall and 80 feet wide.  Oak leaves can be serrated or smooth and they grow in spirals that also include acorns which contain an oak seed.  Oak trees native to the Chicago area include the white oak, swamp white oak, shingle oak, and Chinkapin oak.

Learn more about Oak Trees in Chicago & Surrounding suburbs.

Dogwood Trees

Dogwood trees are mostly deciduous trees that can be identified by their bark, berries, and flower clusters.  There are many types of dogwood trees found throughout the U.S. These trees can grow to be 15 to 25 feet tall with leaves that have smooth edges and curving veins.  The flowers may look different between the different species of dogwoods, but all dogwood species have clusters of flowers that are typically white in color.  All dogwoods also bear fruits called drupes which are edible, brightly colored berry-like fruits that contain hard pits.  The Pagoda dogwood and Cornelius cherry dogwood are native to the Chicago area.

Learn more about Dogwood Trees in Chicago & Surrounding suburbs.

Ash Trees

Ash trees are tall, flowering trees that are part of the same family of species that includes olives and lilacs.  These trees typically grow 40 to 60 feet in height, but it is possible for some species of ash to reach 80 feet.  Ash species have simple leaves that grow opposite on their whorls and their flowers grow in clusters.  The appearance of the flower will differ slightly depending on the species and sex of the tree.  Ash flower clusters tend to consist of small while-pedaled flowers or green and purple clusters.

Just a few years ago, the green and white ash trees were common throughout Chicago.  Unfortunately, ash trees have been disappearing from the region due to the damage caused by the invasive emerald ash borer.

Learn more about Ash Trees in Chicago & Surrounding suburbs.

Sassafras Trees

Sassafras is a genus of tree that contains three different species found in North America and East Asia.  The species Sassafras albidum is the species of sassafras that is native to the Chicago area.  These trees are deciduous and can grow anywhere from 15 to 40 feet in height on average.  Sassafras trees have also been known to exceed this height as the tallest sassafras in the world is over 100 feet.  These trees are known for their fragrance and the unusual characteristic of having up to three different leaf patterns on the same tree.  The flowers of a Sassafras albidum are yellow in color and have six petals.  These trees are dioecious which means that male and female flowers grow on separate trees.  Female sassafras trees also bear dark blue drupes as its fruit.

The white sassafras, red sassafras, and silky sassafras can be found in the Chicago area.

Learn more about Sassafras Trees in Chicago & Surrounding suburbs.

Willow Trees

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Weeping Willow Trees are Common Around Lakes in the Chicago Suburbs such as Arlington Heights & Park Ridge, IL. Learn more about Willow Trees

There are around 400 species of willow trees that are found throughout the Northern Hemisphere.  Willow trees have watery sap, slender branches, and a strong, expansive root system.  They can grow between 6 and 8 feet per year and reach up to 50 feet when fully grown.  Most willow trees are deciduous with elongated, feather-veined leaves that are typically serrated.  The flowers of a willow tree grow as catkins in clusters that cause the branches the droop, giving the willow its signature look.  The black willow is one type of willow tree native to the Chicago area.

Learn more about Willow Trees in Chicago & Surrounding suburbs.

Crabapple Trees

Crabapple trees (Malus sp.) are very popular throughout the Midwest because of their showy, colorful spring flowers.  They are also relatively small which makes them a great addition to most yards and landscapes.  These trees are among the most colorful in the Chicago area as their flowers can be a range of colors including pink, purple, and red, and their large fruits may also appear as different colors such as orange, yellow, green, red, or purple.  There are 55 different species of crabapple trees that range in size from medium trees (25-40 feet) to large shrubs known as cultivars (about 8 feet tall).

Learn more about Crabapple Trees in Chicago & Surrounding suburbs.

Locust Trees

Locust Trees in Illinois

Locust trees are native to the Chicago region

Locust trees are medium to large deciduous trees that usually have thorns or prickles.  There are two main types of locust trees found in Illinois; the honey locust (Gleditsia triacanthos) and the black locust (Robinia pseudoacacia), also referred to by some as “Chicago Blues.”  Both of these species of locust trees flower in the spring and produce drooping clusters of cream-colored flowers.  Even though locust trees are native to the Chicago region, they are considered somewhat invasive because they can cover open habitats with shade which shrinks the surrounding eco-system.  Locust trees have been known to transform native grasslands into forested areas.

Eastern Redbud

Eastern Redbud in Illiois

The eastern redbud (Cercis canadensis) is a medium sized deciduous tree native to the Chicago area

The eastern redbud (Cercis canadensis) is a medium sized deciduous tree native to the Chicago area that is typically planted for ornamental purposes.  They can grow anywhere between 15 and 40 feet and they have bright purplish-pink flowers that bloom along their dark branches early in the spring.  The leaves of an eastern redbud are alternate, heart-shaped leaves that generally turn yellow in the fall.  Eastern redbuds make great additions to yards and landscapes because of their size and colors, but they are vulnerable to diseases and borers, so they must be cared for properly.

American Elm Trees

American Elm Trees in Illinois

American elm trees are large trees that can withstand the harsh conditions of the Chicago region.

American elm trees (Ulmus americana) are large deciduous trees that can withstand the harsh conditions of the Chicago region.  These trees were the most popular to plant during the 19th century, but the introduction of Dutch elm disease in the 1950s has ravaged much of the American elm population throughout the area.  Elm trees are known for their large canopies and leaves that turn golden yellow in the fall.  Because of Dutch elm disease, it is not recommended to plant a traditional American elm, but there are several species of hybrid elm trees that are control bred and much more resistant to disease.

Box Elder Trees

Box Elder Trees in Illinois

Box elder trees are a species of maple tree that are native to the Chicago area.

Box elder trees (Acer negundo) are a species of maple tree that are native to the Chicago area.  These trees can grow to be between 30 and 50 feet and they can withstand cold, harsh conditions.  Unlike other maple trees, box elders are dioecious with male and female flowers on the same plant and they have compound leaves instead of the typical large lobed leaves of other maples.  Box elders are usually planted as shade trees, but you must consider their aggressive self-seeding which can result in several more box elders being planted naturally on your property.