It has potential. It looked like it could get interesting along the way when you can start hiring adventurers to forage for mushrooms etc.
There is white text on a white button when you plant a mushroom. Don't know what it says.
I did find clicking the plus had to be precise which was tedious. I'd suggest you create a bigger area to click. Same with harvesting the mushrooms.
I could only buy one mushroom at a time, and plant one mushroom at a time, and that became boring. Perhaps if you can buy 1, 5, or 10 at a time. And have a button to plant all - that auto plants all the mushrooms on hand (perhaps randomly to encourage players to plant them one by one instead).