Gabe15

Although I'm a believer in that anything is possible, half of those methods are scientifically impossible for bananas (though the impossible ones are completely reasonable with other plants), the others are valid. You need corm to grow new plants (well, there is a way to generate plants without any corm, but this is a very advanced tissue culture method which I don't know how you would replicate without a lab, materials, training etc...all that junk).

I would recommend cutting down the plants and making a horizontal cut deep into the meristem, this will destroy the apical dominance and encourage the growth of new pups. I've done this with good success on even very small plants. And although I've never tried it, I have heard lawn starter fertilizer works well, it must have some kind of shoot proliferation hormone in it which would make sense for starting off newly planted lawns.

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Growing bananas in Colorado, Washington, Hawaii since 2004. Commercial banana farmer, 200+ varieties.