Grow a pineapple from a pineapple top. Within 2 weeks, some nice roots should develop. With time, the pineapple leaves will also get longer and bigger. Also, it's good to change the water, clean the jar occasionally, and wash off any green algae on the roots. Plant in soil when ready. In about 2 years it will produce fruit..
How to grow a pineapple from the core of the one you are eating... If you'd like to learn how to grow a pineapple that will yield a sweet-tasting fruit, then you've come to the right place. This page is chock full of everything you need to know