Drangonfruit is a solid next choice for money generation then, @metalfenix_Raf. It is the most profit-generating crop I keep in my current Sim houeshold's garden (don't like growing money trees because you can't also eat them). One of my favorite things to do is to graft dragonfruit on to any other plant that I don't already have grafted with other stuff...so every plant makes decent profit as well as giving me whatever produce I may also be growing for usage.
UFO plant (and other of the extra terrestrial plants) are the only one that has a higher profit rate, I believe...and is just wierd.