Pansies and Violas are hardy plants and will survive a frost—and even a hard freeze—for a period of time. Depending on how hard the frost was, flowers that were blooming may wither, but the plants will stay alive. … When temps fall below 10 degrees for several hours, this is extreme cold for Pansies and Violas.

How cold is too cold for pansies?

It is a good idea to monitor the weather, as temperatures that drop into the low 20s can damage even the most cold-tolerant annuals, such as pansies. Temperatures that dip to 25 degrees will likely damage the flowers on pansies. The plants should survive, but their spring flower display will be severely affected.

Should I cover my pansies tonight?

Many plants — such as azaleas, pansies and hollies — can survive just fine without any covering. Some may wilt overnight, but they’ll perk up again the next day.