Is Stinky the Snail fast enough to collect all dropped coins in the zen garden?

I have a full Zen garden that needs watering. If I water every plant as fast as I can, will Stinky the Snail be able to collect all the coins for me without any disappearing (with or without chocolate)?

Secondary question that would answer the first I guess. Do coins disappear in the Zen Garden at all?

Solution 1:

Coins in the Zen Garden are no different from coins in the game itself. They will disappear after a set amount of time.

As for Stinky the Snail, I personally have not tested if he can collect all the coins without chocolate. I know for a fact that if you give him and all the plants chocolate and then go grab a coffee, he will be able to collect most of them.