Every fall the number one question seems to be “Is fall really the best time to plant trees”? And “how late into the winter can I plant”? As long as you are able to dig in the ground, most freshly dug trees (B&B) get a healthier start when root growth doesn’t compete with spring’s shoots and leaves.
Trees are programmed to do most of their root growth in the fall when less energy is being used for bud and leaf development. They keep producing roots as long as the ground temperature is above 40 degrees – long after hard frost arrives. By planting early in the fall, when leaves start to turn color, you are maximizing root development and ensuring your tree will have the beginnings of a healthy new root system in place before the buds open next spring.
There are a few exceptions: Balled and burlaped oaks, tulip poplars, magnolias, birches, and sweet gums. These trees should be dug and moved in the spring. No matter how early in the fall they are transplanted, they seem unable to develop enough of a root system. These few trees probably won't die but the following spring the strain of producing buds, leaves as well as roots puts undo stress on the plant. Container grown trees, no matter what variety, can be planted any time of year.
