Canada's Plant Hardiness Site

	1961-1990 zone	1991-2020 zone	1961-1990 hardiness index	1991-2020 hardiness index
Aberfoyle	5b	6a	57	62
Actinolite	5a	5b	53	57
Acton	5b	6a	55	60
Ailsa Craig	6a	6b	64	66
Ajax	6a	6b	62	68
Alban	4a	5a	44	50
Alcona	5b	5b	55	59
Alexandria	5a	5a	51	54
Alfred	4b	5a	49	52
Allenford	5b	6a	56	61
Alliston	5b	6a	55	60
Alma	5a	5b	51	57
Almonte	4b	5b	49	55
Alvinston	6b	6b	65	68
Ameliasburg	6a	6a	62	63
Amherstburg	7a	7a	70	74
Angus	5b	6a	57	60
Anten Mills	5b	5b	56	59
Apple Hill	5a	5a	51	54
Apsley	4b	4b	46	49
Arden	5a	5b	50	55
Arkona	6a	6b	64	67
Armstrong	1a	2b	11	25
Arnprior	4b	5a	48	53
Arthur	5a	5b	51	57
Astorville	4a	4b	41	46
Athens	5b	5b	55	59
Atikokan	2b	3a	26	33
Attawapiskat	0b	1a	7	14
Atwood	5b	6a	55	60
Aurora	5b	6a	56	62
Avonmore	5a	5a	52	54
Aylmer	6a	6b	63	67
Ayr	5b	6a	59	63
Ayton	5a	5b	53	58