Canada's Plant Hardiness Site

Athyrium americanum (Butters) Maxon

American alpine lady fern, alpine lady fern

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Data Details

Number unique observations: 356
Zone range (Canada): 0b - 9a

p 1971-2000

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Hardiness Zones

Canadian Plant Hardiness Zones
Zone	%
0a	0
0b	1
1a	1
1b	1
2a	3
2b	4
3a	6
3b	6
4a	8
4b	8
5a	5
5b	4
6a	3
6b	2
7a	1
7b	1
8a	1
8b	1
9a	1
Outside Canada	42

USDA Zones
Zone	%
1	0
2	0
3	8
4	27
5	35
6	18
7	5
8	2
9	1
10	0
11	0
12	0
13	0

Bioclimatic profile

name	mean	S.D.	1%	5%	10%	25%	50%	75%	90%	95%	99%	maximum	minimum
Annual Mean Temperature	2.6	2.57	-3.04	-1.62	-0.75	0.9	2.4	4.42	6.0	6.85	8.54	9.0	-3.8
Max Temperature of Warmest Period	19.29	3.28	12.2	14.08	15.3	16.9	19.2	21.72	23.5	24.92	26.48	28.8	10.5
Min Temperature of Coldest Period	-9.73	4.31	-19.43	-17.02	-15.6	-12.52	-9.6	-6.7	-3.9	-2.98	-1.61	0.2	-21.2
Annual Precipitation	1414.83	695.1	481.3	602.5	680.0	840.0	1259.0	1903.5	2352.5	2829.0	3308.0	3479.0	406.0
Precipitation of Warmest Quarter	170.23	71.39	41.0	50.75	61.0	120.75	176.5	221.25	262.5	284.75	311.0	319.0	35.0
Precipitation of Coldest Quarter	560.53	307.65	102.55	178.75	203.5	344.25	491.5	778.0	966.0	1219.25	1357.65	1392.0	77.0