My garden has mostly low maintenance drought tolerant plants, and with the winter rains, it sustains my plants. So when everything else around us has turned deciduous, my garden still looks green and okay. The only thing is if it rains too much and with the cold air then my succulents are in a precarious situation. Cannot bring them indoors, so always hoping for the best that my plants survives the cold weather. Among my plants that does its winter die out are the hostas, astilbe, bleeding heart, but come spring they all return nicely.
For my plants indoors, during winter, I have orchids in bloom so it is colorful indoors, like my mini-cymbidium, doritaenopsis and paphiopedilum. Reduced watering for them like once every 2 weeks, and they thrive quite well.
So for me, winter still is an ongoing gardening season.