GARDEN FERN EMERGENCE SUMMARY, by week

wk	1993	‘94	‘95	‘96	‘97	‘98	‘99	2000	‘01	‘02	‘03	‘04	'05	'06	∑	%	%/day
3-								1		2					3	.5	.07
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	.13
5D			1				1		1		2		0		5	0.9	.13
5E																	0
6A										1					1	0.2	.03
6+						1				1			1		3	0.6	.09
∑	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