Plant List #12: Invasive Species

Question 1

What is the family name of the Dwarf Arctic willow?

Answer 1

Salicaceae

Question 2

What is the binomial name of Dwarf Arctic willow?

Answer 2

Salix purpurea ‘Nana’

Question 3

How tall does the Dwarf Arctic willow grow?

Answer 3

7 feet

Question 4

What are the uses of Salix purpurea ‘Nana’

Answer 4

Mass plantings, rear border, slope/erosion stabilizations

Question 5

What is the family name of the Common reed?

Answer 5

Poaceae

Question 6

What the binomial name of Common reed?

Answer 6

Phragmites australis

Question 7

How tall does the common reed grow?

Answer 7

12 feet

Question 8

What are the uses of Common reed?

Answer 8

Very common in ditches and streams. European strain is highly invasive and used for paper, biofuels etc.

Question 9

What is the family name of Lily-of-the-valley?

Answer 9

Asparagaceae

Question 10

What is the binomial name of Lily of the valley?

Answer 10

Convallaria majalis

Question 11

How tall does Lily of the valley grow?

Answer 11

12 inches

Question 12

What plant on this list can tolerate full shade?

Answer 12

Lily of the valley
English ivy
Sweet woodruff
Japanese spurge

Question 13

What is the use of Lily of the valley?

Answer 13

Groundcover for shade and under trees. Avoid near natural areas

Question 14

What is the family name of the Manitoba maple?

Answer 14

Sapindaceae

Question 15

What is the binomial name of Manitoba maple?

Answer 15

Acer negundo

Question 16

How tall does Manitoba maple grow?

Answer 16

50 feet

Question 17

What problems does Manitoba maple have?

Answer 17

Attracts boxelder bugs (invades houses in fall), grows fast but has week wood and is very scraggly

Question 18

What is the family name of the Tree of heaven?

Answer 18

Simaroubaceae

Question 19

What is the binomial name of the Tree of heaven?

Answer 19

Ailanthus altissima

Question 20

How tall does the Tree of heaven grow?

Answer 20

80 feet

Question 21

Which plant on this list is highly adaptable to pollution?

Answer 21

Tree of heaven

Question 22

What are the problems of the Tree of heaven?

Answer 22

Grows fast, brittle, weak wood, grows in concrete cracks, allelopathic

Question 23

What is the family name of English ivy?

Answer 23

Araliaceae

Question 24

What is the binomial name of English ivy?

Answer 24

Hedera helix

Question 25

How tall can English ivy grow?

Answer 25

80 feet

Question 26

What are the uses of English ivy?

Answer 26

Groundcover, naturalizer

Question 27

What is the binomial name of European buckthorn?

Answer 27

Rhamnus cathartica

Question 28

What is the family name of European buckthorn?

Answer 28

Rhamnaceae

Question 29

How tall does European buckthorn grow?

Answer 29

25 feet

Question 30

Which plant on this list must not be planted?

Answer 30

European buckthorn

Question 31

What is the binomial name of sweet woodruff?

Answer 31

Galium odoratum

Question 32

What is the family name of the sweet woodruff?

Answer 32

Rubiaceae

Question 32

How tall does sweet woodruff grow?

Answer 32

12 inches

Question 32

What are the uses of sweet odoratum?

Answer 32

Groundcover, herb garden, rock garden, edging

Question 32

Which plant on this list requires moist and slightly acidic soil?

Answer 32

Sweet woodruff

Question 33

What is the binomial name for Japanese spurge?

Answer 33

Pachysandra terminalis

Question 34

What is the family name of Japanese spurge?

Answer 34

Buxaceae

Question 35

How tall does Japanese spurge grow?

Answer 35

12 inches

Question 36

What is the use for Japanese spurge?

Answer 36

Groundcover for shade, under trees with vigorous roots, avoid near natural areas

Question 37

What is the binomial name of Russian olive?

Answer 37

Elaeagnus angustifolia

Question 38

What is the family name of Russian olive?

Answer 38

Elaeagnaceae

Question 39

How tall can Russian olive grow?

Answer 39

20 feet

Question 40

What is the use of Russian olive?

Answer 40

Useful along highways, roads, but invasive otherwise. Has thorns

Question 41

Which plant on this list is salt and drought tolerant?

Answer 41

Russian olive

Question 42

What is Toronto's new Hardiness zone?

Answer 42

7a