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