These seedlings were killed off by the severe frost.
The severe frost kill off most of the insect pest
Two of them have been admitted to hospital with severe frost bite.
Plum blossom: it is not a warm spring breeze to greet it, but the cold spring, but the cold winter, but not the glittering and translucent manna, but the severe frost, it is not the thick green, but the cold snow.
Meantime there are two kinds of weather of the cold wave, one of them is expressed as rainy or snowy day near the front, another is successive clear days result in severe frost hazard.