By our calculations, you should look at sowing Argos about 14 days before your last frost date.
Bred by Caithness Potato Breeder Ltd. from the cross (143-27 (ex. Solanum Vernei) x Cara) in Scotland in 1982. 1
1 “Argos – Canada Food Inspection Agency”: http://www.inspection.gc.ca/plants/potatoes/potato-varieties/argos/eng/1312587385637/1312587385638