How to Care for a Tropical Pineapple Plant. How To Care For A Pineapple Plant. In USDA zones 10 and 11 they will do fine outdoors at any time of the year. How to Take Care of a Pineapple Plant. Growing a pineapple is a lot like growing … Pineapple (Ananas comosus) is a tropical plant that grows to heights and widths of up to 5 feet. Sun, warmth, a little water and regular fertilizer are all it takes to care for a pineapple plant (_Ananas comosus_), both for the ornamental spiky leaves and the fruits. Pineapple Plant Care – tips for keeping your plant healthy It’s very important that your pineapple plants see maximum sunlight. They do well in containers in cooler regions. For being an exotic species, pineapples are quite easy to grow. In U.S. Department of Agriculture plant hardiness zones 10 through 11, you can grow this tropical plant outdoors year-round. For better plant growth and good harvest, you should take care of certain factors like soil, light, temperature, irrigation, nutrients and diseases. For most people living in the Northern Hemisphere, you’ll get most sun throughout the day if your plant is positioned at a south, or south-west, facing window. Growing pineapple is very easy as the plant requires a few maintenance.