The pineapple is one of almost 3,000 bromeliad species in the world. It is known for its spiky look, which makes for a conversation-starting houseplant. Instead of buying an expensive started pineapple plant from a specialty nursery, grow your own houseplant by starting a pineapple fruit from the store, according to the University of California. In just a few months, you'll have your own indoor pineapple bush.
Pull off the pineapple plant's leafy crown and pluck off the leaves on the bottom 1/3 of the crown stalk.
Fill a 5-gallon pot with potting soil labeled for use with bromeliads. If you don't have such potting soil on hand, mix equal parts standard potting soil with sand.
Plant the pineapple crown. Insert the crown into the potting soil so that its bottom leaves are just above the soil surface. Water the pot twice daily or as needed to keep the soil perpetually moist. With this treatment, the crown will take root within eight weeks, according to the University of California.
Reduce watering as soon as the crown is rooted. When you water, apply enough irrigation so that moisture appears in the drainage holes at the pot's bottom. Wait to water again until the top 1 to 2 inches of dirt feel dry.
Place the pot in a sunny, south-facing window where it can receive a minimum of six hours of direct sunlight per day. Pineapple houseplants thrive in full sun.
Fertilize the pineapple once a month. The University of California recommends using any standard fertilizer labeled for use on houseplants. Apply the fertilizer according to its labeled guidelines, since potency varies by product.