The "golden trumpet tree", Tabebuia chrysotricha, is a close relative of a common Oahu tree -- Tabebuia donnell-smithii, the "gold tree".

These trees are indeed magnificent in bloom.  But unlike most of our trees they are deciduous.  All the leaves fall off in the middle of our winter and all the branches are bare until the flowers come out.  

That's not such a big deal, but oh man, the opala when all the leaves fall off.  It's as bad as mango.