It depends on how you want to consider plastic waste. It can be gold if you Reuse, Recycle or it can be waste if you just disposed it and it will become an environmental nuisance. Use you plastic waste as gold. this is what we encourage in Serudec.
These nurseyy pots can be reused as many times as possible. Remember after your seedling are ready for transplanting, you can plant the trees and bring back your empty nursery pots to be reused. You can use them for 400.000years.