Canada's Plant Hardiness Site

Ambrosia trifida L.

giant ragweed, great ragweed, buffalo-weed, skeletonleaf bursage

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Data Details

Number unique observations: 8642
Zone range (Canada): 4a - 7b

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	0
3a	0
3b	0
4a	1
4b	1
5a	1
5b	1
6a	1
6b	1
7a	1
7b	1
8a	0
8b	0
9a	0
Outside Canada	94

USDA Zones
Zone	%
1	0
2	0
3	1
4	9
5	18
6	25
7	18
8	20
9	6
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	12.17	4.1	4.5	6.5	7.11	9.1	11.65	15.0	18.5	19.8	20.8	23.1	1.2
Max Temperature of Warmest Period	31.01	2.77	25.4	26.9	27.8	28.8	30.7	33.2	35.1	35.8	36.2	38.0	22.7
Min Temperature of Coldest Period	-7.31	5.9	-19.82	-17.2	-15.2	-10.6	-7.95	-3.6	1.1	3.2	5.8	10.1	-25.0
Annual Precipitation	1017.24	237.23	395.0	619.05	769.0	871.0	995.0	1164.0	1337.0	1440.0	1577.0	1751.0	293.0
Precipitation of Warmest Quarter	285.2	51.56	145.0	186.0	201.0	257.0	296.0	318.0	336.0	347.0	416.59	458.0	116.0
Precipitation of Coldest Quarter	197.93	99.49	32.0	54.0	71.0	121.0	189.0	263.0	344.0	395.95	433.0	489.0	20.0