Occasional winter frosts (night temps below 55°F) with daytime highs around 77°F constitute USDA Zone 9. This provides sufficient dormancy for Venus flytraps and Sarracenia, as evidenced by successful growers in Los Angeles.
At higher elevation near Mexico City, with ~3 frosts last winter, you're likely Zone 9–10 borderline. Compare your lowest temperatures to the USDA map on our website to confirm.
USDA zones are US-centric. Creating a world zone map is impractical. Match your climate to the nearest US city analog for guidance.
Good growing!
Growing Temperate Sundews: Terrarium vs. Outdoors
Growing Nepenthes Outdoors in Zone 9: Acclimation and Frost Protection
Pinguicula moranensis Winter Leaf Transition in Late Winter
Diagnosing Venus Flytrap Decline Next to Thriving Sarracenia: Winter Damage, Not Competition
Zone 5 Winter Dormancy: Unheated Stairwell With North Windows Works
Unexpected Spring Snow: Protecting Early-Growing Sarracenia in Zone 6
Winterizing Venus Flytraps and Sarracenia on a Patio: Insulation Strategies
Venus Flytrap and Sarracenia Dormancy in South Florida (Zone 10): No Fridge Needed
Why Your Nepenthes Pitchers Are Blackening: Light Deficiency, Not Humidity
Overwintering Sarracenia and Dionaea in Zone 5 Maine: Mulch Works Best
Can Nepenthes Pitcher in Winter? Yes—With Proper Light
Winter Dormancy Strategies for Carnivorous Plants in Cool Climates
What to Expect from Nepenthes in Winter: Growth Slowdown and Pitcher Loss
When to Plant Temperate Pinguicula macroceras Outdoors: Temperature Guidelines
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