How many money trees can I have?

So I'm confused about money trees. Every source online and here implies I can get multiple money trees for more profit. But when I purchase it in game, it says: "You can collect up to 100 bucks per real life day for all money trees combined - this stops your trees from drying up!"

This sounds like 1 tree is the same as having 10 trees or 100 trees - You can only collect up to $100 a day, no matter how many trees. Am I reading this correctly? Are all the sources online wrong?!