I wonder if I have got things wrong, hence asking for help here.

In the Plant Tycoon game I don't seem to be able to get past the point I am at without spending actual money to buy plant notes.

I have all the coin based things you can buy from the Supplies option. It seems that now I can only grow and sell plants and increase my coin totals. However there is nothing else I can buy with coins!

I really liked playing the game but now feel very let down. Can anyone confirm I have got as far as you can get or have I missed something?

Thanks