Metaphor - A ponderous House

I'm a riddle in nine syllables,
An elephant, a ponderous house,
A melon strolling on two tendrils
O red fruit, Ivory, fine timber!
The loaf's big with it's yeasty rising
Money's new minted in this fat purse.
I'm a means, a stage, a cow in calf.
I've eaten a bag of green apples
Boarded the train there's no getting off.

Answer: (ɯǝod snoɯɐɟ ɐ oslɐ sı sıɥʇ)

ʎɔuɐuƃǝɹd