The first thing you need when you want to grow a pineapple is a pineapple.
The pineapple (ananas comosus) is a bromeliad; in fact, one of the few in its family that is edible. However, the fruit of an unripe pineapple is poisonous and will irritate both your mouth and throat.
Even the ripe fruit of the houseplant
pineapple is not nearly as luscious and sweet as that grown in the sands of
the tropics; still, the pineapple is a striking, interesting, and unusual
plant to add to your collection.

The pineapple is a biennial. The first year it produces leaves and the
second year it produces the flowering stalk that becomes the fruit.
Actually, the pineapple flower becomes the popular fruit.
A small leaf-like cluster produces up to 200 dagger shaped bracts that are the flowers. These flowers have immature ovaries that are called inflorescences.
Each ovary
turns into a seedless berry, the berries fuse together into one unit: the
multiple fruit or sorosis we call the pineapple.