You can grow a garden during the winter months indoors or in your greenhouse. This year I bought a freestanding 5-shelf greenhouse from Walmart.com and set it up on my enclosed front porch. The porch was an excellent area for the greenhouse because it has windows that face south and a grow light above.
The perfect location of this portable greenhouse will allow the new seedlings to grow in the sun and in a room that has an average temperature of 70 degrees.
This location is beneficial to the plants and it saves on energy because if I had left it on my outdoor patio I would have had to heat it due to the bitterly cold weather.
Presently I am not growing many plants. I have a container of chocolate mint and spearmint, rosemary, a palm tree, and Christmas cactus. All are doing well.
If you enjoy gardening you may want to shop for a portable greenhouse that you can set up in your home next to a southern window or under a grow light. I find my plants are growing well in a cooler room with the heat from the sun and a grow light above for use when on days when the sun is not out.