"Citrus trees are an easy fruit to grow indoors," says Gail R. Nonnecke, a professor in the horticulture department at Iowa State University. "While the fruit production might be small, the flowers ...

Most of us are familiar with the taste of cinnamon, whether from eating a spiced apple pie or drinking a festive latte. It's often sold ground up into a powder, but you can buy cinnamon sticks, too.