Spring is when most people get energized to plant trees in their garden but fall is a much better time if you live in a temperate climate.  There is less stress on the trees because of lower temperatures, reduced transpiration and a higher moisture availablity.  The roots have a chance to grow out into the native soils during the winter before the onslaught of high summer heat.  Also, if you are choosing trees for their fall color, they should begin to show some color now depending upon the location and the species.  By the way, if you chose something that has fall color, that doesn't mean it will have the same color in your garden.  Rather, it just assures you that the color is genetically possible.  Often our...