The spiky appearance of the pineapple plant (Ananas comosus) makes for a conversation-starting houseplant. It's also relatively low maintenance. Though you can buy started pineapple plants in specialty garden stores, growing a pineapple plant from the fruit sold in a store is cheaper and gives you an excuse for buying this juicy, tropical fruit.
Choose a fresh pineapple in the grocery store. Select any size fruit--it doesn't even have to be ripe--but make sure the top is green, with no dead or yellow leaves. Pull a leaf gently; if it comes out easily, it's old, and you should use a different fruit.
Cut off the top inch of the pineapple fruit with the green top still intact. Use a knife to cut away off all remnants of the fruit so you're left with the green top and a fruity stem.
Set the top aside for 48 hours. This allows its bottom to dry out, reducing the chance of mold or fungus growth and rotting, according to Iowa State University.
Prepare a gallon-sized pot while waiting for the top to dry. Fill the pot with perlite or vermiculite, available from most garden stores and nurseries.
Plant the pineapple top. Bury it vertically, sinking the stem into the perlite or vermiculite up to the base of its leaves.
Sprinkle the pot with water to moisten the potting medium. Repeat twice daily or as needed to keep it perpetually moist. The pineapple will take root within eight weeks, according to Iowa State University. Transplant the pineapple into a standard potting mix once it has grown roots.