Pineapple is a tropical plant chiefly cultivated in plantation for its large oval fruit. The mature fruit which ripens 5 to 6 months after flowering resembles the rough - textured cones of the pine tree. It may grow to length of almost 1 foot (30 cm.) and may weigh 1 to 20 pounds (0.5 to 10 kg.) The fruit has a course scheme and fibrous central core, both of which are discarded, leaving a large, juicy, sweet fruit. The pineapple is rich in sugar and in Vitamin A, C & B1 (Thiamine).