Canada's Plant Hardiness Site

	1961-1990 zone	1991-2020 zone	1961-1990 hardiness index	1991-2020 hardiness index
Tamworth	5b	5b	55	59
Tara	5b	6a	56	61
Tavistock	5b	6a	58	62
Teeswater	5b	6a	55	60
Teeterville	6a	6b	63	66
Temagami	3a	4a	33	41
Terrace Bay	2b	3a	27	33
Thamesford	6a	6b	61	65
Thamesville	6b	6b	66	69
Thedford	6b	6b	65	67
Thessalon	4b	5a	47	53
Thornbury	5b	6a	58	61
Thorndale	6a	6b	61	65
Thornloe	2b	3b	29	36
Thornton	5b	5b	55	59
Thorold	6b	7a	69	72
Thunder Bay	3a	3b	30	36
Tilbury	6b	7a	69	73
Tillsonburg	6a	6b	64	67
Timmins	2a	2b	24	28
Tiverton	5b	6a	56	62
Tobermory	5a	5b	53	57
Toledo	5a	5b	54	58
Toronto	6a	7a	64	71
Trenton	6a	6a	61	62
Trout Creek	4a	4a	40	44
Turkey Point	6b	7a	68	72
Tweed	5a	5b	54	58