Types of trees in CT are ones that would cover hectares of forest land, which is how they make this state green. In the spring and summer, these Connecticut native trees grow so thick that you can get lost for hours if you just wander away. That’s why you will find many signposts, trails, and maps in Connecticut to keep you on the right path.

Types of Trees in CT Plant America

In the Autumn, the black oak of the Fagaceae family, maple, and other beautiful trees listed below turn this state into a display of beautiful foliage attracting tourists worldwide.

A Complete List of Types of Trees in CT

1. American Beech

Majestic American Beech Plant America

Features
  • Smooth, gray bark
  • Triangular leaves with saw-toothed margins
  • Smooth brown buds with sharp points
Size 
  • Grows up to 75 feet tall
  • Have a crown width of 40 feet
  • Acorns are at least half an inch wide
Where they grow 
  • North Carolina
  • Michigan
  • Pennsylvania and West Virginia.
Common diseases and pests 
  • Diseases include beech scale
  • Pests – beech blight aphids and North Carolina carnivorous butterfly

Fagus Grandifolia is an indigenous tree that can live up to 400 years. It is easy to identify them in winter due to their smooth, brown buds with sharp points. They grow tall, towering over other trees at 75 feet tall.

Their saw-toothed triangular leaves are always a show, and they would change their colors in fall, which would be on the shades of yellow to orange, due to climate change. These leaves develop a golden bronze color in the fall. Moreover, it is also significant that this beech tree is graceful and superior to other beeches remaining attractive all year long.

2. Eastern Hemlock

Towering Eastern Hemlock Plant America

Features
  • Evergreen tree
  • Has drooping branches and small cones
  • Needles are glossy green-gray with a white underside
Size 
  • Maturity size is 40 to 70 feet tall
  • The crown is 25 to 35 feet wide
Where they grow 
  • Thrive in USDA hardiness zones three to seven
  • Grows in cooler summers and moist areas
Common diseases and pests 
  • Diseases include hemlock, scale, and needle rust
  • Common pests include hemlock looper, borer, and spruce spider mite

Tsuga Canadensis is an evergreen tree that beautifully carries its drooping branches and small cones. It grows slowly, with most people opting to prune it for a hedge but is best if left to grow as a tree.

However, you should also be very keen upon this tree, because it is known to get infested by different pests such as hemlock or even scale, which is why you should tackle them before they increase in their number.

Also, note that its needle-like leaves are green-gray and glossy with a white underside. The eastern hemlock bark is so smooth and brown, especially on the young trees but matures to blackish brown with deep groves. The leaves have sharp serrated edges that could hurt you if you come into contact.

3. Eastern White Pine

Stately Eastern White Pine Plant America 1

Features
  • Evergreen conifer
  • Needles grow in bundles of five
Size 
  • Grows up to 80 feet tall
  • The crown is 40 feet wide
  • Needles are five inches long and 1.2 inches wide
Where they grow 
  •  Grows in USDA hardiness zones three to eight
  • Does well under cool, humid climates
Common diseases and pests 
  • Diseases include blister rust and eyelash fungus.
  • Pests include bagworm, pitch mass borer, and pine sawfly.

Pinus Strobus is an evergreen conifer tree belonging to the pine family; also it is native to the Northeastern United States and Canada, where the atmosphere is cooler. This plant is known to grow in moist, well-drained fertile sandy loamy soils so that they would thrive, and as for their sun requirements, they need full sun to establish themselves.

This tree grows naturally, reaching up to 80 feet tall, and is intolerant of many air pollutants like ozone salts, sulfur dioxide, and alkaline soils.

4. White Oak

Iconic White Oak Plant America

Features
  • Leaves have a velvety upper leaf surface
  • Has a white furrowed bark
  • The acorns are tiny with no stalks
Size 
  • Mature tree reaches up to 60 to 80 feet tall
  • The crown spreads up to 30 to 40 feet wide
Where they grow 
  • Prefers full sun areas
  • Does well in USDA hardiness zones three to nine
Common diseases and pests 
  • Highly susceptible to oak wilt, cankers, and powdery mildew
  • Pests include aphids, leaf miners, and lace bugs

Quercus Alba or charter oak is commonly known as the official tree of Connecticut state. It is the most widely grown tree in this state, reaching up to 80 feet high. The leaves are dark green to slightly blue-green in summer, while the bark is light, ashy gray.

The fall foliage is showy with brown and wine-red to orange leaves, and as they develop, they would start producing acorns; on average, this is when it’s about 50 to 100 years old. Moreover, this tree is known to thrive under bright and full sun, as it is in moist soil.

5. Red Pine

Resilient Red Pine Plant America

Features
  • The fascicles/needles come in pairs
  • They are flexible and slightly twisted
Size 
  • Needles reach up to four to six inches long
  • The tree reaches about 50 to 80 feet tall
  • The crown reaches 20 to 30 feet wide
Where they grow 
  • Thrives in USDA hardiness zones two to five
  • Prefer fully sunny areas
Common diseases and pests 
  • Common disease is the red pine pocket mortality
  • Pests include root collar weevil, red turpentine weevil, and pitch-eating weevil

The scientific name of this plant is called, the Pinus Resinosa, and it is a more common and dominant species than the white pine. This plant can be identified by its needle arrangement and bark. These needles grow in bundles of two and can break easily when bent.

Moreover, the cones are egg-shaped; the bark has reddish-gray to reddish-orange flaky plates. These pines grow fast with straight trunks and are sometimes referred to as Norway pine, and it is famous for its sweet yet earthy smell.

6. Red Maple

Striking Red Maple Plant America

Features
  • The leaves have serrated margins
  • The bark is striking red on the young trees and dark brown on mature trees
Size 
  • Grows up to 80 feet in height
  • The crown reaches up to 35 feet tall
Where they grow 
  • Native to the eastern deciduous forest
  • Can be found in Maine wet, Minnesota, Texas, and Florida
Common diseases and pests 
  • Diseases include fungal leaf spots and powdery mildew
  • Pests include aphids, cankerworms, and leafhoppers

Acer Rubrum is a close relative to the sugar maple tree. It is a slow-growing tree that takes about 25 years to mature.

It is named for its red fruit, flowers, twigs, and autumn foliage, and in spring, you would also see them blooming little flowers. The largest of these trees can grow up to 120 feet tall, and their leaves would grow as wide as almost six inches.

7. Northern Red Oak

Robust Northern Red Oak Plant America

Features
  • Leaves are lobed with a bristly surface
  • Grayish brown furrowed bark
Size 
  • Mature size is up to 80 feet tall
  • The crown is 40 feet wide
  • Acorns are an inch long with a pointed tip
Where they grow 
  • Thrives in USDA hardiness zones three to eight
  • Native to Eastern North America
  • Found throughout the mountain areas of North Carolina
Common diseases and pests 
  • Common pests include the common gypsy moths, and caterpillars
  • Diseases are oak leaf blister and brown fungal aroma

Quercus Rubra is a long-lived species, often living up to 300 years. It is a medium-sized tree that grows fast and has a rounded spreading crown. The crown branches of this red oak are one that is close to the ground and spread across the lawn beautifully.

Moreover, it has green leaves with grayish-white undersides, which is what signifies it. Together with its beautiful leaves that are known to turn reddish brown fall color, leaving it aesthetical in the season.

Most of the time, you may find them on common streets, and that is because these trees are pollution tolerant, and they would show their resilience and stay healthy.

8. Red Mulberry

Hardy Red Mulberry Plant America

Features 
  • Medium-sized tree
  • Rounded and broad crown
  • Short trunk
Size 
  • Leaves are eight inches long
  • An average height of 25 to 60 feet tall
  • The crown is 35 to 40 feet wide
Where they grow 
  • Thrives in moist, well-drained soils in fully sunny areas
  • Grows in USDA hardiness zones four to eight
Common diseases and pests 
  • Common pests include mulberry whitefly and giant whitefly
  • Diseases include fungal and bacterial leaf spot

Morus Rubra tree is a medium-sized tree with ovate leaves that are heart-shaped and serrated margins. The bark is gray and has long scaly ridges as it matures. The flower and fruit of this tree mature in the summer and measure about an inch long.

This tree best grows in rich, moist soils under full sun to partial shade. You can easily grow it from cuttings or seeds; if allowed, it also self-seeds. When you grow them, make sure that it is pruned in the fall or winter so that you would avoid bleeding the tree.

9. Black Cherry

Ornamental Black Cherry Plant America

Features
  • Dark brown and smooth green leaves
  • Leaves have no hair on the surface
  • Gray-brown buds covered by overlapping scales
Size 
  •  Grow up to a mature height of 90 feet tall
  • The crown is at least 40 feet wide
Where they grow 
  • Native to Midwest and Eastern United States
  • Grows commonly in Kentucky
Common diseases and pests 
  • Susceptible to leaf spot, leaf curl, die back, root rot, and powdery mildew
  • Potential insects include scales, aphids, borers, caterpillars, leafhoppers, and Japanese beetles

Prunus Serotina is a tall deciduous tree growing up to 90 feet tall. Its green leaves turn orange in the autumn before falling off, but in spring, they would thrive again with their beautiful and vibrant foliage.

This is the type of tree that is known to produce small, black fruits at least half an inch across and are eaten by humans and birds. In general, the tree grows flaky or scaly bits on the bark as it ages; on the other hand, the bark, roots, and stem contain high concentrations of a toxic cyanogenic compound hence the bitter taste.

10. White Ash

Graceful White Ash Plant America

Features
  • Dark gray bark
  • Blue-green leaves
  • The fruit splits into two when mature
Size 
  • Grows up to 100 feet tall
  • The crown is 40 feet wide
Where they grow 
  • Native to North Carolina
  • Thrives in USDA hardiness zones four to nine
Common diseases and pests 
  • Common pests include ash borer, lilac borer, oyster shell scale, and leaf miners
  • Diseases include fungal leaf spots, rust, powdery mildew, and cankers

Fraxinus Americana is a deciduous tree that does not tolerate exposure to salt air, and it grows to about 100 feet and grows in rich, moist soils. You will commonly find it growing in river bottomlands and mountain coves, because they are known to inhabit those areas.

Moreover, these trees produce small light green to purple flowers with no petals. When it comes to the pollination process, they have male and female flowers on separate trees and only the female flowers develop into fruits, and they would develop.

11. Eastern Redbud

Vibrant Eastern Redbud Plant America 1

Features
  • Heart-shaped leaves
  • Drooping flower clusters of purple blooms
Size 
  • A small tree of about 10 to 20 feet tall
  • The crown spread to 30 inches wide
Where they grow 
  • Grows in Kentucky and Oklahoma
  • Thrives in USDA hardiness zones four to nine
Common diseases and pests 
  • Potential clients include tent caterpillars, leafrollers, caterpillars, and weevils
  • Diseases include bacterial leaf scorch, root and crown rot, and verticillium wilt

Cercis Canadensis has reddish-purple leaves that change to dark green and then yellow, in the autumn time, before they would fall; in addition, they form a graceful, spreading crown. In the spring season, on the other hand, they would attract different pollinators and they would help in the pollination process and blooming of the little colorful flowers.

The Eastern tree of Redbud has a short trunk and belongs to the legume family, commonly grown in ornamental gardens and landscaping areas. It is the state tree of Oklahoma, with two varieties with smaller, glossier leaves.

12. Smooth Sumac

Colorful Smooth Sumac Plant America

Features
  • Has smooth bark and compound leaves
  • Leaves are made of three leaflets
  • They have serrated margins
Size 
  • A small tree of about 25 to 30 feet tall
  • The crown is about 20 to 25 feet wide
Where they grow 
  •  Native to many states of the United States
  • Commonly grown in the Eastern United States
Common diseases and pests 
  • Potential pests include caterpillars and mealybugs
  • Diseases include powdery mildew, leaf spots, root rot, and cankers

Rhus Glabra is a small tree with a spreading crown, and it has alternate leaves at least 122 to 16 inches long with about 15 to 23 leaflets. On the other hand, the leaves are dark green and shiny with a white lower surface.

The margins are coarsely toothed, and the leaves release a white sticky sap when broken. These leaves turn red in the fall, and you would have such an aesthetical feature around your house if you plant them.

13. American Sweet Gum Tree

Decorative American Sweet Gum Tree Plant America

Features
  • Lobed leaves with toothed margins
  • Star-shaped leaves
  • Gray-brown bark with irregular furrows
Size 
  • Grows up to 80 to 120 feet tall
  • Has a diameter of four feet
Where they grow 
  • Thrive in USDA hardiness zones six through nine
Common diseases and pests 
  • Potential insects include bagworms, boring beetles, and fall webworms
  • The diseases include fungal leaf spots, bacterial diseases, and bleeding necrosis

Liquidambar Styraciflua is a large forest tree commonly found in wet river bottoms in swamps that get flooded and drier uplands. It is a deciduous tree that will grow up to 120 feet.

The tree has alternate-lobed leaves with serrated margins, and it is famous for producing small bright yellow-green flowers in the spring. The spherical, spiny fruits known as gumball follow. The leaves turn purple, red, yellow, or orange in the fall, and in winter, this tree is known to go dormant.

14. Black Birch

Elegant Black Birch Plant America

Features
  • White smooth bark that gets vertical cracks
  • Double-serrated leaves, each with smaller teeth
  • Alternate leaves
Size 
  • Reaches up to 70 feet tall
  • The crown is 35 feet tall
Where they grow 
  • Native in Connecticut
  • Common in Massachusetts, and New Jersey
Common diseases and pests 
  • Include birch leaf blister, white spongy trunk rot, and nectria canker
  • Common pests include aphids, leaf miner, and Japanese beetle

This is the tree that is also known as sweet birch, a tree grows up to 70 feet tall. It is a fast-growing tree that takes only ten years to reach full maturity.

It is a genus of about 60 species found in many gardens across America, at times in botany; some may also call it the betula lenta. It is a pyramidal-shaped tree maturing into a more rounded shape, and it would grow when you irrigate properly and place it in alkaline soil.

15. Pignut Hickory

Strong Pignut Hickory Plant America

Description
  • Grayish brown bark with smooth ridges
  • Alternate leaves
  • Leaves are made up of several leaflets
Size 
  • Grows up to 100 feet tall
  • The crown is 40 feet wide
Where they grow 
  • Native to Chicago
  • Growing in most states in America
Common diseases and pests 
  • The hickory bark beetle kills this tree
  • Diseases include powdery mildew, leaf spot, leaf blotch, and white heart rot

Carya Glabra is a tall tree growing up to 100 feet tall, having beautiful leaves which are veined are parallel. It has serrated leaves that are saw-like along the edges, and the only issue is that they would get infested heavily by some beetles, which may also cause them to die.

When they reach the age to mature, the tree care should still be keen, because it would be able to produce nuts with a husk that splits into four when mature revealing the hard nut inside.

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