Arbor Day is the last Friday in April in Indiana; this year it is April 27. This date is strategically chosen to be right in the middle of one the best time periods all year to plant a tree in Indiana. Fall is also a good time. So, if you have been thinking about adding a tree or two to your home landscape, late April is a great time to do it! A Purdue expert offers some tips for you to increase your chances of success.