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FORCING
Pineapple can be "forced" to flower in order to produce fruit sooner than it would under natural conditions. If the plant is large and vigorous, the fruit produced will be about as large as if it had flowered normally; otherwise, fruit size and quality will be reduced by forcing.
If you can find calcium carbide, perhaps in a hobby store, drop three or four small pellets into a cup of ice water. When the solution stops fizzing, pour it into the center of the rosette whorl of leaves.
Och här är förklaring på svenska för calcium carbide
http://spa.118100.se/kalcium/244213Hoppas det ger frukt

för mig är det nog lååååång tid kvar innan jag kan pröva själv.
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