Mushroom Logs are Refining Equipment that produce up to 5 mushrooms every 4th day, reduced by 1 day when it rains. It gives 5 foraging experience points when harvested.
Stardew Valley Wiki
Mushroom Logs are Refining Equipment that produce up to 5 mushrooms every 4th day, reduced by 1 day when it rains. It gives 5 foraging experience points when harvested.