Canada's Plant Hardiness Site

Arnica sororia Greene

twin arnica, bunch arnica, twin leopardbane

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Data Details

Number unique observations: 450
Zone range (Canada): 1b - 7b

p 1971-2000

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Hardiness Zones

Canadian Plant Hardiness Zones
Zone	%
0a	0
0b	0
1a	0
1b	1
2a	1
2b	1
3a	2
3b	6
4a	7
4b	1
5a	1
5b	1
6a	1
6b	1
7a	1
7b	1
8a	0
8b	0
9a	0
Outside Canada	78

USDA Zones
Zone	%
1	0
2	0
3	7
4	31
5	27
6	28
7	4
8	1
9	0
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	5.27	2.31	-0.75	1.14	2.2	3.7	5.45	7.0	8.01	8.56	9.81	11.5	-2.2
Max Temperature of Warmest Period	27.09	2.99	19.15	21.6	22.9	25.12	27.5	29.5	30.5	30.96	32.25	34.9	17.7
Min Temperature of Coldest Period	-11.94	3.45	-19.55	-17.8	-16.61	-14.2	-11.95	-9.3	-7.5	-6.2	-4.9	-3.1	-20.7
Annual Precipitation	452.84	131.5	258.98	293.0	316.0	352.0	415.5	534.0	635.2	715.85	822.93	917.0	231.0
Precipitation of Warmest Quarter	95.81	42.78	38.0	42.0	45.0	53.0	94.0	128.0	155.2	168.0	201.51	215.0	23.0
Precipitation of Coldest Quarter	125.7	69.85	28.49	37.45	43.0	76.0	115.0	165.0	216.0	241.1	378.08	403.0	24.0