Grill Mat - Set of 4 Heavy Duty BBQ Grill Mats - Non Stick, Reusable, and Easy to Clean Barbecue Grilling Accessories - Lifetime Manufacturers Warranty All Plants were cut from mature trees. Young leaves are eatable as vegetables.Tree grows to 25 m tall with a trunk up to 70 cm diameter. 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 2 days delivery in San Francisco Bay Area.