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In article <01bd4acf$9f9e9da0$a489f1c3 at ladru>, bas.ladru at worldonline.nl
>>We have a Nymphoides (Banana Plant) wich is about 4 years old and about 2m
>wide and high.
>We cant get the plant so far to produce any bananas.
You presumably mean the true banana plant [_Musa_ sp.,l (Musaceae)], not
_Nymphoides_ (Menyanthaceae), which is an unrelated small aquatic plant
that was given its aquarium-trade name because of its banana-like bunches
of fleshy roots. [_Nymphoides_ never get anywhere near 2 m.]
True bananas are rhizomatous monocots, with each aerial shoot
flowering only once, then is replaced by offsets after fruiting. There are
dwarf forms that may bear fruit at rather small plant sizes, and also
large ones that may need to be considerably larger than your 2 meter one in
order to flower and fruit. Probably all it needs to flower and fruit is for
it to get big enough in a sunny warm greenhouse [or outdoors in warm
climates]. The cultivated edible bananas are parthenocarpic, seedless
forms; I forget if pollination is completely unnecessary for fruit