I had to take a photo of my Money Trees in my garden. In all I have 4 and 2 of them are flowering. I haven't done anything to them nor fed them anything special. I don't even recall watering them that much.
Other than in photos I don't think I have ever seen one in flower. We grew these in the UK but in pots and inside. I don't think they could survive the UK Winter but here in Australia mine are growing at an alarming rate.
I feel like shouting - "look Mum, my money tree has flowers" LOL.