I thought I bought a ravenala (ravenala madagascariensis), but now I have
doubts it could be a giant bird of paradise (strelitzia nicolai)... Any
ideas on how to identify it correctly ?

(The leaves are fan-shaped, so it is not strelitzia alba/augusta, and are
bigger than those of strelitzia reginae... So I'm left with ravenala and
gbop.)

--
Yukinoroh