Linda Chalker-Scott, an associate professor and horticulturist at Washington State University and the author of "How Plants Work: The Science Behind The Amazing Things That Plants Do" talks about what leaves are telling you about your tree's health. Lynn Long, a professor of horticulture at Oregon State University talks about cherry rootstock. Read more about cherry root stock in this article.The host of The Urban Forestry Radio Show and Podcast is Susan Poizner of the fruit tree care education website www.orchardpeople.com.  Tune into The Urban Forestry Radio Show LIVE by going to RealityRadio101.com on the last Tuesday of every month at 1.00 pm Eastern Time.Learn to grow organic fruit trees successfully. Sign up for OrchardPeople.com's premium online courses at https://learn.orchardpeople.com/.