What plant pots can stay outside in winter?
Metal, concrete and wood containers typically handle freezes well, as do fiberglass and resin pots. Some plastic pots also survive winter fine, but may become brittle over time. Winter sunlight can fade fiberglass and resin pots. Fiberglass, lead, iron, heavy plastic, and stone are the best weather-resistant containers to use; terra-cotta will eventually expand and crack with repeated freezing and thawing. Assemble your designs early enough that the plants have time to acclimate to their new pots before the hard freeze.
What is too cold for potted plants?
Most houseplants are native to tropical areas and will not tolerate freezing temperatures. Many indoor plants will see damage when temperatures drop to the mid to lower 40s°F and nearly all will die if exposed to below freezing temperatures. The answer to this question differs across plant types. Sanseveria, for instance, is a pretty tough plant species, able to withstand temperatures as low as 40°F. Conversely, a Pothos plant does not do well with temperatures under 65°F.All plants have their comfort zone—a specific climate where they grow optimally. Each plant likes to grow in its preferred climate and weather conditions. Planting plants in climates that are too hot or too cold will stress them and could strain their growth.