Canada's Plant Hardiness Site

Heracleum maximum W.Bartram

cow parsnip, common cow parsnip, masterwort

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Data Details

Number unique observations: 6941
Zone range (Canada): 0a - 9a

p 1971-2000

Map Legend

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Hardiness Zones

Canadian Plant Hardiness Zones
Zone	%
0a	1
0b	1
1a	1
1b	4
2a	8
2b	11
3a	8
3b	5
4a	3
4b	2
5a	1
5b	1
6a	1
6b	1
7a	1
7b	1
8a	1
8b	1
9a	1
Outside Canada	48

USDA Zones
Zone	%
1	1
2	7
3	29
4	20
5	17
6	15
7	5
8	1
9	1
10	1
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	5.19	3.88	-3.7	-1.0	0.5	2.5	4.9	8.1	10.3	11.4	14.2	16.5	-6.1
Max Temperature of Warmest Period	24.36	3.95	14.04	16.6	18.7	22.1	24.8	27.4	29.0	29.8	31.7	35.7	11.9
Min Temperature of Coldest Period	-12.88	6.82	-27.9	-23.7	-20.9	-17.6	-13.3	-9.0	-3.5	0.6	3.5	6.0	-32.4
Annual Precipitation	906.7	394.87	337.4	423.0	472.0	609.0	848.0	1093.0	1392.0	1723.0	2192.2	2511.0	186.0
Precipitation of Warmest Quarter	216.34	92.38	13.0	52.0	84.0	144.0	231.0	292.0	325.0	343.0	386.0	506.0	6.0
Precipitation of Coldest Quarter	244.56	199.0	37.0	55.0	64.0	110.0	188.0	293.0	539.0	710.0	927.6	1009.0	22.0