GARDEN FERN EMERGENCE SUMMARY, by week

1993

‘94

‘95

‘96

‘97

‘98

‘99

2000

‘01

‘02

‘03

‘04

'05

'06

∑

%

%/day

3-








1


2





3

.5


3D


1

1

1

1


1

5


1

1

1



13

2.4

0.3

3E





2

5


6




1


1

15

2.8

0.9

4A

2

4

6

4

3

10

10

10

3

3

3

1

9

6

74

13.8

2.0

4B

4

4

2

1

3

10

13

11

10

13

4

6

5

9

95

17.7

2.5

4C

13

10

8

8

5

8

8

6

5

19

8

15

14

15

142

26.4

3.8

4D

3

5

6

10

12

2

5

3

20

2

16

11

12

10

117

21.8

3.1

4E



1


1


3



1

3

3

2

0

14

2.6

1.3

5A

1

0

1

2

2

1

2

1

5

2

8

4

2

4

35

6.5

0.9

5B



1

1

2


2

2

2

1

1

2

1


15

2.8

0.4

5C









1


2

2

0


5

0.9


5D



1




1


1


2


0


5

0.9


5E


















6A










1





1

0.2


6+






1




1



1


3

0.6


∑

23

24

27

27

31

37

45

45

47

46

48

46

46

45?

537

100



The table shows the week of emergence for fern taxa each year,

e. g. 5B is the second week of May.

Emergence defined as bottom of fiddlehead curl clearing the ground.

Allston (Boston) MA USA zone 6B