how “Mushroom Grow Kits” only say they fruit once or twice on the box, but wild/cultivated mushrooms usually don’t stop.

Question

I’ve seen a mushroom grow kit from Back to the Roots. It says that the vacuum sealed bag is mycelium and you can follow instructions to get it to fruit once, maybe even a second time on the other side of the bag. Why does it imply that it stops there? I thought mycelium continues to spread and fruit periodically?

Thank you in advance for the insight!

Edit: Awesome explanations guys, thank you again

In: 1036

Answer 1

The kit has a limited supply of resources and all of the various toxic biproducts of metabolism are building up inside the kit. So it cannot last forever unless you constantly replaced everything, effectively making a new kit all the time.