Canada's Plant Hardiness Site

Heracleum mantegazzianum Sommier & Levier

giant hogweed, giant cow parsnip, cartwheel flower

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Data Details

Number unique observations: 311
Zone range (Canada): 2b - 9a

p 1971-2000

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Hardiness Zones

Canadian Plant Hardiness Zones
Zone	%
0a	0
0b	0
1a	0
1b	0
2a	0
2b	1
3a	1
3b	1
4a	4
4b	8
5a	6
5b	7
6a	5
6b	3
7a	1
7b	1
8a	1
8b	1
9a	1
Outside Canada	61

USDA Zones
Zone	%
1	0
2	0
3	1
4	19
5	27
6	44
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	7.23	2.06	2.71	4.0	4.6	5.9	6.9	8.65	10.1	10.85	11.5	12.7	2.0
Max Temperature of Warmest Period	25.76	1.62	22.22	23.05	23.4	24.8	25.9	26.9	27.5	28.1	29.59	31.1	21.0
Min Temperature of Coldest Period	-10.58	5.95	-19.8	-18.8	-17.8	-14.2	-11.4	-9.5	0.4	0.7	1.2	1.5	-24.1
Annual Precipitation	1076.23	208.87	797.0	818.5	845.0	928.0	1036.0	1172.5	1333.0	1495.0	1716.1	1871.0	391.0
Precipitation of Warmest Quarter	247.19	71.52	84.2	99.0	114.0	230.0	257.0	287.0	341.0	349.5	368.5	387.0	70.0
Precipitation of Coldest Quarter	288.19	136.17	128.2	160.5	172.0	197.5	248.0	304.0	505.0	627.0	704.2	814.0	89.0