USDA Hardiness Zones for Carnivorous Plants in San Francisco

What Zone Is San Francisco?

A grower in San Francisco asks about USDA hardiness zones and what they mean for carnivorous plants. After checking, San Francisco falls in zones 8–9. This means most North American temperate carnivorous plants (like Sarracenia and Venus flytraps) will thrive outdoors year-round, going dormant in winter and regrowing in spring. Tropical species, however, must be kept indoors during winter.

Understanding Hardiness Zones

Zones are based on average minimum temperatures, helping growers choose plants suited to their climate. If you try to grow tropical plants outdoors year-round in zone 8–9, they will likely die, though some subtropicals may survive and return in spring. Temperate plants naturally enter dormancy in winter and resume growth when conditions improve.