Frosted, but not frost dead yet

The overnight air continues to get colder and colder and it shouldn't be long before the overnight killing frosts are here. Soon after, the ground freezes and the snows of winter will begin. The tenderest of the flowers outside my door have been touched hard enough by the frosts that they have died, but the hardiest, like the geraniums, will still hold onto life for the few remaining weeks they have before the killing frosts are too much for even them to survive.