... distinguishes it from other plants is its sap. Break off a leaf and you will notice that the sap is bright yellow. It was used by Native Americans as a dye. Scott Aker is a horticulturist at the U.S. National Arboretum. EndStory//

... diseases are less likely to be severe. Fruits that grow in the warm, dry sunny days and cool nights of autumn develop far more flavor than the midsummer crop. Scott Aker is a horticulturist at the U.S. National Arboretum. EndStory//

... stems. "But you have to plant a lot of it," said Chrissy Moore, curator of the National Herb Garden at the U.S. National Arboretum. She grows a perennial species called creeping savory, which is still a valuable culinary herb used to season ...