The Arboretum

Trees

As you might guess, we have a lot of trees and other woody plants in The Arboretum!  These include those growing naturally in our forested areas, those that have invaded our site and those that we have planted here from all over the Northern Hemisphere.  In the spring, the blooms of our roses , lilacs, rhododendrons, serviceberries, magnolias and tulip trees will delight you.  In the summer, the shade from our specimen trees in the Park in The Garden provides an excellent picnic spot.  In the fall, the oranges, yellows, reds and purples of our landscape will wow you.  In the winter, our large variety of evergreens look stately against the snow.

Research:

The Arboretum conducts its own research as well as provides a site for others to do research projects as well. We are studying elms to try to develop trees that are resistant to Dutch Elm Disease and yet are genetically diverse (Elm Recovery Project). We also have a gene bank of rare Ontario trees (Rare Woody Plants of Ontario). This means that we have trees, shrubs and vines here that have been grown from seed collected in wild sites in Ontario. The Arboretum is also in charge of the Ontario Tree Atlas Project which is a record of the distribution of trees in Ontario.

Courses: 

If you want to learn about trees, you may be interested in our courses.  Please click here to go to our workshop page.

Pests: 

Many people try to contact us about tree pests, but the best place to go for that is the pest diagnostic clinic here at the University of Guelph.  You can also try to identify your pest yourself by using this key developed by a University of Guelph graduate student.

Native Trees:

Our native species are the backbone of many different Ontario habitats.  Each species account in the list below includes photos, identification information, natural history and cultural aspects of our leafy friends. We will continue to add species to the following list as accounts are completed.

CONIFERS

Balsam Fir
Black Spruce
Eastern Hemlock
Eastern Red Cedar
Eastern White Pine
Jack Pine
Northern White Cedar
Pitch Pine
Red Pine
Red Spruce
Tamarack
White Spruce

HICKORIES

Bitternut Hickory
Pignut Hickory

Shagbark Hickory

Shellbark Hickory

MAPLES

Manitoba Maple
Striped Maple
Red Maple
Freeman's Maple (Red X Silver)
Silver Maple
Black Maple
Sugar Maple
Mountain Maple

ASHES

Black Ash
Blue Ash

Green Ash

Pumpkin Ash
Red Ash

White Ash

BIRCHES

Gray Birch
Paper Birch
Yellow Birch

POPLARS

Eastern Cottonwood
Largetooth Aspen
Trembling Aspen

OAKS

Black Oak
Bur Oak

Chinquapin Oak
Hill's Oak

Red Oak

Shumard Oak

Swamp White Oak
White Oak

CHERRIES

Black Cherry
Choke Cherry
Pin Cherry

Wild Plum

ELMS

Rock Elm
White Elm

SERVICEBERRIES

Allegheny Serviceberry
Downy Serviceberry

WALNUTS

Black Walnut

HACKBERRIES

American Hackberry
Dwarf Hackberry

DOGWOODS

Alternate-leaved Dogwood
Eastern Flowering Dogwood

SUMACS

Staghorn Sumac

OTHER SPECIES

American Basswood
American Beech
Blue Beech
Black Gum
Cucumber Tree
Honey-Locust
Hop Tree
Ironwood
Kentucky Coffeetree
Pawpaw
Red Mulberry
Sassafras
Showy Mountain Ash
Tulip Tree


NON-NATIVE BUT NATURALIZED SPECIES

Black Locust





 

University of Guelph Arboretum
College Ave East
Guelph, Ontario, N1G 2W1
Canada

519-824-4120
ext. 52113

 

GPS Co-ordinates

43°32'39.06"N

80°12'57.78"W