If it is snowing in your garden, then it will become tough to preserve plants in the winter. Snow naturally freezes the ground, restricting roots and preventing growth while draining precious nutrients your plant needs. It is best to bring in as many plants as possible; leaving them in bitterly cold weather will likely kill off the petals and leaves.If you are preserving plants in the winter from the inside, be sure the plant is getting sunlight whenever necessary if the sun shines through dark clouds. Place your plant by the window sill to get as much lighting as possible.,