Acer platanoides
Common Name(s) : Norway maple
Origin : Eurasia
Status : Available
Provincial Location(s) : On, QC, NF
Habitat : Towns, natural areas adjacent to urban
Description : 30 m high, flowers 10 mm wide, greenish yellow in clusters,
leaves 5-7 lobes, dark green, simple, opposite, deciduous, seeds with
widely spread wings
Usage : Street Tree, Ornamental
Invasive Potential : L
Control Method(s) : 4, 6
Additional Comments : Tolerant to pollution, introduced 1778
Aesculus hippocastanum
Common Name(s) : Horse chestnut
Origin : Europe
Status : Available
Provincial Location(s) : ON
Habitat : Urban and semi-natural areas
Description : 20 m high, flowers showy, 20-30 mm long, bell-shaped, white
or cream with red and yellow spots, 5-9 leaflets, 10-25 cm long, pointed,
stalkless, thorny, fruits globular, 50-60 mm across, green turning brow,
in clusters
Usage : Ornamental
Invasive Potential : P
Control Methods : 4, 6
Additional Comments : Tolerates clay soils
Ailanthus altissima
Common Name(s) : Tree-of-heaven
Origin : Asia
Status : Available
Provincial Location(s) :
Habitat : Urban areas
Description : 25 m high, yellowish green flower clusters at tip of shoot,
leaves deciduous, alternate, pinnately compound, 11-41 leaflets, I seed in
center of coloured spiral
Usage : Ornamental
Invasive Potential : L
Control Method(s) : 4, 6
Additional Comments : Allelopathic, unpleasant odour, fast growing
Alnus glutinosa
Common Name(s) : European alder, Black alder
Origin : Europe
Status : Available
Provincial Location(s) : ON, NF, NS
Habitat : Creek valleys, wetlands
Description : 20 m high, flowers as pollen producing catkins, leaves
obovate, rounded, broadly pyramidal with several trunks, hanging cones,
1-2 cm long
Usage : Ornamental
Invasive Potential : P
Control Method(s) : 4, 6
Additional Comments : Spread by river, spreads vegetatively
Betula pendula
Common Name(s) : Silver birch, European white birch
Origin : Europe
Status : Available
Provincial Location(s) : BC, MB, ON, NS, PEI
Habitat : Disturbed quarries and bogs, wetlands
Description : 15 m high, flowers in long slender catkins, leaves 3-7 cm
long, triangular or ovate, hairless, double-toothed, cones 2-4 cm long
Usage : Landscaping, Ornamental
Invasive Potential : L
Control Method(s) : 4, 6
Additional Comments : Displaces native flora, overshades
Elaeagnus angustifolia
Common Name(s) : Russian olive, Trebizond date, Oleaster
Origin : Eurasia
Status : Available
Provincial Location(s) :
Habitat : Fence rows, urban areas
Description : 25 feet high, flowers yellow inside, silver outside, in
small fragrant clusters, leaves narrowly oblong, 4-8 cm long, dull green,
alternate, simple, fruit olive like, silvery turning to yellow
Usage : Ornamental
Invasive Potential : P
Control Method(s) : 4, 6
Additional Comments : Tolerant to sandy soils
Elaeagnus umbellata
Common Name(s) : Autumn olive
Origin : Eurasia
Status : Available
Provincial Location(s) :
Habitat : Woodlands
Description : 10-12 feet, flowers yellow to white, small fragrant
clusters, leaves oval, pointed, silver underneath, 4-6 cm long, fruits
olive like, silvery then red
Usage : Ornamental
Invasive Potential : H
Control Method(s) : 4, 6
Additional Comments : Spread by birds
Morus alba
Common Name(s) : White mulberry
Origin : Eurasia
Status : Available
Provincial Location(s) : ON
Habitat : Waste areas, fence rows, forest edges
Description : 25 m high, small greenish flowers, leaves wedge-shaped,
hairless, sharply toothed, fruit 10-20 mm long, white, red, or black
Usage : Ornamental
Invasive Potential : L
Control Method(s) : 3,4,5
Additional Comments : Spread by birds, hybridizes with rare native Red
Mulberry
Picea abies
Common Name(s) : Norway spruce
Origin : Eurasia
Status : Available
Provincial Location(s) :
Habitat : Moist deciduous woods
Description : 40 m high, needles straight, stiff, sharp, dark green, cones
cylindrical, 10-18 cm long
Usage : Ornamental
Invasive Potential : P
Control Method(s) : 4, 6
Additional Comments : Forms dense evergreen storey
Pinus sylvestris
Common Name(s) : Scots pine, Scotch pine
Origin : Europe
Status : Available
Provincial Location(s) : BC, SK, AB, MB, ON, QC, NF, NB, NS, PEI
Habitat : Old fields, roadsides, open bogs, open woods
Description : 30 m high, needles evergreen, bundles of 2, 4-8 cm long,
blue-green, cones conical to ovoid, 2.5-7 cm long
Usage : Landscaping, Ornamental
Invasive Potential : L
Control Method(s) : 4, 6
Additional Comments : Useless for most purposes
Populus alba
Common Name(s) : White poplar
Origin : Europe
Status : Available
Provincial Location(s) : BC, AB, SK, MB, ON, QC, NF
Habitat : Beach habitats, urban areas
Description : 30 m high, flowering catkins producing pollen, pre formed
rhomboidal leaves, 3-5 lobed, blue-green
Usage : Ornamental
Invasive Potential : L
Control Method(s) : 4, 6
Additional Comments : Spreads vegetatively, hybridizes with native species
Populus nigra var. italica
Common Name(s) : Lombardy poplar
Origin : Europe
Status : Available
Provincial Location(s) :
Habitat : Woodlands, urban areas
Description : 15 m high, leaves alternate, smooth margined, triangular,
5-10 cm long, bright green, fruits red, green or black
Usage : Ornamental
Invasive Potential : L
Control Method(s) : 4, 6
Rhamnus cathartica
Common Name(s) : European buckthorn, Common buckthorn
Origin : Europe
Status : Available
Provincial Location(s) : BC, SK, ON, QC, NS, PEI
Habitat : Open woods, pastures, fence rows
Description : 6-15 feet high, small green flowers, grouped or solitary,
thorny, leaves 1-2 inches long, opposite, fruits green changing to black
Usage : Ornamental
Invasive Potential : H
Control Method(s) : 4, 6
Additional Comments : Excludes all native seedlings, spread by birds,
introduced before 1913
Rhamnus frangula
Common Name(s) : Glossy buckthorn
Origin : Europe
Status : Available
Provincial Location(s) : MB, ON, QC, NS
Habitat : Wetlands and bogs, shaded ravines, mixed woods
Description : 15 feet high, small white flowers, dense hairy winter buds,
spineless entire leaves, black fruits
Usage : Ornamental
Invasive Potential : H
Control Method(s) : 4, 6
Additional Comments : Displaces native species, introduced before 1913
Robinia pseudoacacia
Common Name(s) : Black locust, False acacia
Origin : Appalachian
Status : Available
Provincial Location(s) :
Habitat : Fence rows, roadsides, pastures, moist woodlands
Description : 25 m high, white fragrant flowers in loose drooping
clusters, leaves deciduous, alternate, pinnately compound, 7-19 leaflets,
oval, 3-5 cm long, flat bean-like fruits
Usage : Ornamental
Invasive Potential : L
Control Method(s) : 6
Additional Comments : Forms sterile stands
Sorbus aucuparia
Common Name(s) : European mountain ash
Origin : Eurasia
Status : Available
Provincial Location(s) : ON
Habitat : Urban areas
Description : 5 m high, white flowers, leaves compound, 11-17 leaflets,
fruits bright scarlet to orange-red berries
Usage : Ornamental
Invasive Potential : L
Control Method(s) : 4, 6
Additional Comments : Spread by birds
Ulmus pumila
Common Name(s) : Siberian elm
Origin : Asia
Status : Available
Provincial Location(s) :
Habitat : Urban areas, open woods
Description : 10 m high, leaves narrow, 2-7 cm long, single toothed, dark
green, hairless, smooth, fruits 10 mm long, round
Usage : Hedge
Invasive Potential : P
Control Method(s) : 4, 6
