No you cannot bring back Coconuts from the beautiful beaches of Puerto Rico-among other things.
BEFORE YOU GO TO CHECK-IN...stop at the USDA station
Many travelers from the Mainland USA upon returning to the Airport to check-in with their airline are unaware that you need to have your luggage x-rayed by the USDA station BEFORE going to check in with your airline.
USDA Approval-
You must obtain a special sticker attached to your luggage after being x-rayed before your bag can be checked in or brought on board the airplane. (In April the sticker was Red).
Why?
"USDA's Animal and Plant Health Inspection Service (APHIS) prohibits or restricts the entry of many agricultural products from Puerto Rico and the U.S. Virgin Islands into the U.S. mainland, including most fresh fruits and vegetables and certain types of plants and flowers. That's because these items could harbor a dangerous stowaway--an invasive pest or disease. Just one piece of fruit or a single plant that is carrying an invasive pest or disease could cause millions of dollars in damage, expensive eradication efforts, lost trade revenue, and higher food prices. So, before you mail, ship, or carry any agricultural products into the U.S. mainland, please click on the links below to find out what's allowed and what's prohibited. For more information, please contact the APHIS offices in Puerto Rico at the numbers provided below.
Travelers: You must present all food, plants, and other agricultural items to the USDA inspector at the airport before you leave Puerto Rico or to the U.S. Customs and Border Protection officer before you leave the U.S. Virgin Islands. If your items are generally allowed, the inspector will check them to make sure they are free from pests and disease before you begin your trip to the U.S. mainland."
Source:
https://www.aphis.usda.gov/aphis/resources/travelers-int/ct_puerto_rico_products read more