Canada's Plant Hardiness Site

Polystichum lonchitis (L.) Roth

northern holly fern, mountain holly fern, narrow holly fern

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Data Details

Number unique observations: 1144
Zone range (Canada): 0a - 9a

p 1971-2000

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Hardiness Zones

Canadian Plant Hardiness Zones
Zone	%
0a	1
0b	1
1a	1
1b	1
2a	2
2b	4
3a	5
3b	5
4a	6
4b	5
5a	3
5b	3
6a	2
6b	1
7a	1
7b	1
8a	1
8b	1
9a	1
Outside Canada	54

USDA Zones
Zone	%
1	0
2	0
3	9
4	27
5	29
6	25
7	4
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	2.98	3.18	-4.21	-2.28	-1.3	0.7	3.1	5.4	6.7	7.68	10.26	12.5	-6.2
Max Temperature of Warmest Period	21.02	4.37	11.69	13.42	14.9	17.6	21.5	24.6	26.0	27.5	30.4	32.6	9.7
Min Temperature of Coldest Period	-12.15	4.76	-21.76	-19.0	-17.7	-15.4	-12.5	-9.3	-5.26	-3.2	-0.04	2.8	-27.5
Annual Precipitation	1082.68	474.46	417.16	551.0	625.3	761.75	943.5	1281.5	1802.4	2083.55	2562.56	2910.0	246.0
Precipitation of Warmest Quarter	200.76	69.42	49.0	91.15	117.0	150.0	200.0	248.0	283.4	313.0	373.57	453.0	33.0
Precipitation of Coldest Quarter	356.06	224.66	80.43	122.0	143.0	198.0	286.5	443.25	713.1	857.8	1061.14	1165.0	39.0