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Growing the pineapple tops is really easy. You should actually twist off the top, not cut it off. Grab the pineapple in one hand, and grab the top in the other near the base of the leaves, twist in opposite directions and the top should come off. If you cut the top off you leave fruit behind, which means there is more of a chance for the top to rot. Strip a few of the lower leaves off until you see what looks like little white dots around the base of the top. These "dots" are actually the beginning of roots, and taking the leaves off will help the rooting process. Leave the top in a cool dry place for a couple of days, to "harden off" the top. Again, this helps to insure the top will not rot. After the couple of days is up, plant the top in a 4 to 6 inch pot filled with a fast draining mix, such as a pre-packaged Cactus Mix. Pineapples love fast draining soil and cannot tolerate heavy soils that do no drain well. Water every couple of days, making sure the soil isn't to wet, which would impede the top from rooting. The top should root within a couple of weeks.
Depending on where you live, pineapples should be grown outside. They should be grown in nearly full-sun and temperatures should be kept above 40 degrees Farenheit. If it gets below 40 degrees Farenheit, take your pineapples indoors, making sure they still get plenty of sun. When pineapples are exposed to low temperatures they can become damaged, and if it gets too cold they could rot and die completely. Depending on the variety of pineapple, it could take up to 4 years for it to produce another fruit. In general these fruits are smaller than the ones sold in stores and sometimes less tasty.
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I've been growing pineapples for years and have started many new plants this way.
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- wow thanks everyone. I am so glad I asked.