At this time of the year starting a garden record book is a great way of listing what you need to do as well as knowing what worked and didn’t work over the past growing seasons.
I suggest you start one now if you don’t have one. Make sure your allowing space to record the dates for things like:
first and last frosts,,,,seed-planting dates,,,, transplanting,,, time of bloom,,,, first fruit,,,,fertilizing,,,, problems with pests,,,, and what worked and didn't work.
Over a period of years, this will be an invaluable record. You can also add a map of what you already have planted and where. This is great if you’re transplanting or when you’re planting new flowers, shrubs and trees.
Planning a new garden?... then make a diagram list materials and plants you might want in this new or old garden.
It’s cold out so no better time to organize, clean, oil, and sharpen garden tools. A splash of bright paint on tool handles will make them easier to spot out in the yard.