Pure sativas rarely finish outdoors in cold regions, but sativa leaning hybrids crossed with early finishing genetics often can. The key is checking the actual flowering time rather than trusting the sativa label. Growers in Quebec and similar climates have posted finish reports on https://potentthcseeds.com for various sativa hybrids, noting which ones completed before frost and which were cut early. That real world data is worth more than any listing description for northern outdoor planning.