Soil, or if you have been on a farm, ranch, or pasture.
People Also Ask
Coffee (Roasted, Green, Whole, Seeds, Plant Parts)Roasted Coffee: Travelers are permitted to bring unlimited quantities of roasted coffee in their luggage without restriction through any U.S. port of entry. However, as with all agricultural products, you must declare the product at entry.
Yes, according to US CBP officers, you should declare it as food. I bring chocolate every time I fly from Europe. Generally what happens next is they ask what exactly you are bringing, you say chocolate and they let you go.
Solid food items (not liquids or gels) can be transported in either your carry-on or checked bags. Liquid or gel food items larger than 3.4 oz are not allowed in carry-on bags and should be placed in your checked bags if possible.
All travelers entering the United States are REQUIRED to DECLARE meats, fruits, vegetables, plants, seeds, soil, animals, as well as plant and animal products (including soup or soup products) they may be carrying. The declaration must cover all items carried in checked baggage, carry-on luggage, or in a vehicle.