You're better off looking for a specialty market.
Wasn't looking for it but I doubt it.
I am not sure about green plantains, but I saw yellow plantains and I think yuca
They often have some of these things - and they have a huge array of both organic and regular veggies and fruit - but if you must have just these things a specialty market would be better - or call ahead - -
Thanks! Your answer is awaiting moderation.