Arbor Day Gardening On March 19, 1998 in New York, NY., the Postal Service issued a set of commemorative stamps featuring five different types of flowering trees. All of these trees are native to different geographic regions of North America.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzes reviews to verify trustworthiness.