Invasives Flashcards
(18 cards)
1
Q
A
Spotted Knapweed
2
Q
A
St Johns wort
3
Q
A
Curled Dock
4
Q
A
Common Tansy
5
Q
A
Canada Thistle
6
Q
A
Black locust
7
Q
A
Bull Thistle
8
Q
A
Mullein
9
Q
A
Hoary Alyssum
10
Q
A
Hounds tongue
11
Q
A
Dalmation toadflax
12
Q
A
Chicory
13
Q
A
oxeye daisy
14
Q
A
HImalayan blackberry
15
Q
A
japanese knotweed
16
Q
A
sulphur cinquefoil
17
Q
A
Burdock
18
Q
General Info about invasives
shade tolerance?
preferred sites?
reproductive strategies?(3)
Introduced from ?
A
most are fairly shade intolerant-like open areas with lots of sun
most prefer disturbed seedbeds
All have very effective reproductive strategies, including:
- produce lots of seeds that can travel great distances
- bank seed in soil for many years
- some are perennial plants with extensive rhizomes
many intro’d from europe/asia without natural control agents
