ArtMuseKits BBQ Grill Grate Cleaner Grill Brush Scrapers Grid Scrub Pack of 73 All leaves are freshly picked and will be shipped next day. See below links for more information on wiki http://en.wikipedia.org/wiki/Toona_sinensis http://www.fda.gov/ohrms/dockets/dockets/95s0316/95s-0316-rpt0294-04-Chia-vol230.pdf This seasonal product only available in spring.