Species differ in how long your money stays locked up. ICAR-DMR gives 45 to 60 days from dry straw to fresh oyster mushrooms, and 80 to 100 days for button including compost preparation. The paddy straw bulletin finishes a whole cycle in 4 to 5 weeks.
A short cycle returns cash sooner and lets you correct mistakes sooner, which matters most in year one. A long cycle may carry a better price but needs deeper working capital and a colder room.

