Temperature: Shiitake mushrooms prefer cooler temperatures around 12-24°C (54-75°F).

Humidity: Maintain humidity levels around 80-90%.

Light: Shiitake mushrooms benefit from indirect light.

Tips: Combine coffee grounds with hardwood sawdust or wood chips to create a balanced substrate. Shiitake mushrooms require a higher carbon-to-nitrogen ratio, so consider adding additional nitrogen-rich supplements like wheat bran or soybean meal.