Canada's Plant Hardiness Site

	1961-1990 zone	1981-2010 zone	1961-1990 hardiness index	1981-2010 hardiness index
Sachigo Lake	1b	2a	15	20
Sagamok	4a	4b	43	47
Sandfield	4b	5a	46	53
Sandy Lake	2a	2b	20	25
Sarnia	6a	6b	64	67
Sarsfield	4b	5a	48	53
Sauble Beach	5b	6a	56	62
Saugeen Shores	5a	6a	54	60
Sault Ste. Marie	4a	5a	43	51
Schomberg	5a	5b	53	58
Schreiber	2b	3a	26	34
Scotland	5b	6a	59	64
Seaforth	5b	6a	57	62
Searchmont	3a	4b	34	45
Seeleys Bay	5b	6a	55	60
Seine River Village	3a	3b	32	37
Selkirk	6a	6b	62	67
Shallow Lake	5b	6a	55	61
Sharbot Lake	4b	5a	47	54
Sharon	5a	5b	52	57
Shebandowan	2a	3a	21	31
Sheguiandah	4a	5a	44	51
Shelburne	4b	5a	47	54
Sheshegwaning	4b	5a	46	54
Shoal Lake	2b	3b	26	35
Simcoe	6a	6b	60	65
Singhampton	4b	5a	47	53
Sioux Lookout	3a	3b	30	38
Smiths Falls	5a	5b	50	56
Smithville	6a	6b	63	68
Smooth Rock Falls	1b	2b	18	26
Sombra	6a	6b	64	69
South Bruce Peninsula	5b	6a	56	61
South Huron	6a	6b	60	65
South Mountain	5a	5b	51	55
South Porcupine	2a	3a	21	31
South River	3b	4a	39	44
Southampton	5b	6a	55	62
Spanish	4a	5a	43	50
Sparta	5b	6b	58	65
Spencerville	5a	5b	52	56
Spragge	4a	5a	43	51
Springfield	5b	6b	58	65
Sprucedale	4a	4b	40	47
St. Andrews	5a	5b	51	56
St. Catharines	6b	7a	65	70
St. George	5b	6a	58	61
St. Isidore	5a	5a	50	54
St. Jacobs	5a	5b	54	59
St. Marys	5b	6a	57	63
St. Thomas	5b	6b	59	65
St. Williams	6a	6b	60	66
St.-Charles	4a	4b	40	46
Stayner	5b	5b	55	59
St-Eugène	5a	5a	50	53
Stevensville	6a	6b	63	67
Stirling	5a	5b	54	59
Stittsville	4b	5b	48	55
Stokes Bay	5b	6a	55	61
Stoney Point/Pointe-aux-Roches	6b	7a	66	71
Stouffville	5a	6a	54	60
Straffordville	5b	6b	59	65
Stratford	5b	6a	55	61
Strathroy	6a	6b	61	65
Stratton	3a	3b	32	38
Sturgeon Falls	3b	4b	39	45
Sudbury	3b	4b	39	46
Sultan	2a	3a	24	34
Summer Beaver	1b	2a	15	21
Sunderland	5a	5b	52	56
Sundridge	3b	4a	39	44
Sutton	5a	5b	53	57
Sweaburg	5b	6a	57	63
Sydenham	5a	5b	54	58