Just because there is a winter season where you live doesn't mean that you can't still have outdoor plants, whether they are potted or in the ground. It just means you need to protect them from cold weather elements such as frost and wind. Frost can easily kill young plants, fruits, herbs and vegetables. There are several things you can do in order to protect your outdoor plants from winter weather.
Spread a 2-inch layer of straw around the base of any plants that are planted in the ground or in a pot when it is still fall. This helps insulate the plant's roots.
Wrap up outdoor plants in a material to protect it, from bubble wrap to newspaper. If you have several potted plants, cluster them together and wrap them up like one big present to protect from the wind.
Protect trellis plants with a large piece of canvas material pinned up on either side of it, so it covers plants such as vines, and protects them.
Tuck sheets or blankets over delicate plants like vegetables, saplings, fruits or herbs. Make sure they are completely covered.
Use Christmas string lights for very cold weather to protect trees or shrubs, by wrapping the lights around evenly and keeping them on to produce small portions of heat to warm the plant.
Use portable heaters to warm up large areas or plants for severe winter weather. Just make sure the heater is about 4 to 5 feet away from plants since they can become very strong and burn the plants.