While you may not be able to grow a full, fruit-bearing tree from it, you can easily root and grow an attractive pineapple plant from the healthy top crown of a store-bought pineapple if you keep it in a sunny location and control the climate around it so that it stays warm. Indoors is ideal. To grow a lush, tropical, flowering pineapple plant, choose a pineapple with healthy looking green leaves at its top.
Slice the crown off the fruit approximately half an inch below the crown top of leaves.
Remove as much of the pineapple flesh as possible, leaving the stringy centre core of the pineapple intact.
Pull off a few of the lowest leaves from the crown and discard.
Set the pineapple crown out of direct sunlight and allow it to dry for approximately a week. Drying prepares the crown for planting and prevents rotting.
Fill the pot or container with a mix of three parts potting soil to one part sand. Moisten well with water and allow to drain.
Insert the pineapple crown into the pot or container, gently pushing until the centre core of the pineapple is completely beneath the potting mixture.
Water your plant well at least once a week.
Keep your pineapple plant in bright, indirect sun until it develops roots in about six to eight weeks. After it develops roots, you can gradually move it into direct sunlight.
To force your pineapple plant to bear flowers -- or, depending on its age and size, to bear a fruit -- in winter place the entire plant into a plastic bag that contains some ripe apples for two weeks. The apples will emit ethylene gas, which will encourage the plant to flower/fruit. See References for more information.
Protect your plant from freezing. Always keep your pineapple plant in an environment where the temperature is above 15.6 degrees C.