I love money trees! They - and tiberium - are the only money cheats I use. But to avoid the bills I only have them on community lots. I have a nectary in every neighborhood where my poor sims can collect money- and a lot of other stuff.
Has anyone considered that if you eat the non edible glue - the cheaper choice, remember -the game might be so much more entertaining?........perhaps they should apply this idea to the Sims 4 >:)