Re: What controls finger length?
The first and most influential thing to control that is just what you mentioned, genetics/variety. First of all, 'Dwarf Cavendish' are not the same variety as what you buy in the grocery store, those are 'Grand Nain'. In order to grow those big bananas, you will need the right plant. 5-6 in is normal for 'Dwarf Cavendish'.
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Growing bananas in Colorado, Washington, Hawaii since 2004. Commercial banana farmer, 200+ varieties.
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