It is easy for pineapple to take root when planted first, because its crown has growing points, so it is not difficult to take root in water. However, it is uncertain whether the pineapple will bear fruit. Pineapple is a cross-pollinated plant, which needs a variety of trees to bear fruit after flowering. If only one tree is planted, it is unlikely to produce pineapples. As for the phenomenon of "checking whether there are undeveloped pollinated ovules in the top crown of pineapple", the ovules at the top of mature fruit are unlikely to be developed.