Yes, potting soil go bad but we can extend its shelf life by using different methods and practices. If we use proper methods and practices, we can extend the shelf life of the potting soil. We can sustain our environment too with the use of natural matter, proper watering, and other good practices. We can rejuvenate our potting soil through the use of different methods. amend the compost, rotate soil, water properly, and look for ay problem in the soil. You can also use 2 year old potting soil if you care it properly.