As we all know there is a drought, mild to severe depending on where you are in the United States and even here in Colorado. In Colorado Springs we are having a very dry winter (to date) and temperatures are above average resulting in nice days to be outside but not good news for our trees, shrubs, plants, water and wildlife.
The importance of taking the time to water your lawn, landscaping (trees & shrubs) is critical right now with winter being so harshly dry. For this time of year we find that watering by hand (with a hose & sprinkler on the end) is the best method. The only caveat is to make sure not to leave your hose connected to an outside water spigot and to also bring the house into the garage to avoid freezing. In terms of how often water, check in with your landscaper/tree nursery for recommendations on the dryness and type of trees and shrubs you have.
Taking the time to water in the winter can save a lot of money when Spring and Summer seasons arrive and you find out just how hard of hit your lawn and trees/shrubs took over the winter. As a side note, being a Realtor does not make me an expert on landscaping (far from it in fact) so your landscaper is always a good source for these types of questions as well.