Minimum Temperatures Some pansies even continue growing in temperatures well below freezing, as low as 2 to 5 degrees F, according to the Alabama Cooperative Extension System. Pansies produce abundant blooms in cooler temperatures, decreasing in vigor as temperatures rise.Click to see full answer. In respect to this, how cold is too cold for pansies?When temps fall below 10 degrees for several hours, this is extreme cold for Pansies and Violas. The roots cannot absorb water from the frozen soil.Similarly, why do pansies not freeze? As the air temperature dips below 25 degrees Fahrenheit, pansies flip into defense mode. Soil temperature, however, can sometimes be a greater factor in pansy death than air temperature. If the ground freezes solid, plant roots cannot absorb water and nutrients. And if this happens, they’ll dehydrate. Secondly, how do you protect pansies from frost? Cover pansies with old sheets or blankets if a cold snap is expected for only a day or two. Anchor the edges of the sheets or blankets with rocks to keep them from blowing off the plants. Pansies are hardy plants and can typically withstand low temperature for a short period.How hardy are pansies?Pansies are hardy winter flowers that tolerate cold snaps in Mediterranean climates of U.S. Department of Agriculture plant hardiness zones 8 to 10, as well as light snowfalls in USDA zones 4 to 7. To protect themselves from cold, pansy plants turn greenish-gray when the thermometer drops below 25 F.

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