After harvesting the mushrooms, there are a couple of things required to prepare the grow kit for its second, and subsequent flushes.
If you care for it, the grow kits should continue fruiting for many months. However, the yield may go down as nutrients are depleted from the substrate of the mushroom fruiting block. See the tip below, to keep it going longer.
You may also need to do this if you had a failed flush, where all your mushrooms stalled. In which case, we call this re-setting the bag. If you have experienced a stall, please refer to this article about mushroom-growing problems.
Run your hand over the outside of the bag to clear the holes of any debris and nubby bits like pin-sets that failed to grow, or stem stumps from harvested mushrooms. You may need a knife to clear them. We want these airholes clear so they get plenty of fresh air and space to grow next time.
Weigh the bag and compare its new weight to its original weight. The difference is the water loss. Generally, it will not need rehydration until after its second or third harvest.
Once it’s lost about 70% of its water it’s time for it to take a dunk. Generally, this should not be needed until after the 3rd flush (or possibly the 2nd if you have it in a dry location). Do this by…
This is one of the few things that will harm the mycelium and may cause mould.
We have had customers say that they have kept their grow kits happily performing by adding some nutrition to the bag after 4 months.
Do not overdo it as the nitrogen in the fertilizer may damage the mycelium. We would also recommend doing this before the soaking.
Now you know everything you need about how to grow mushrooms and success for subsequent flushes. If you do a good job caring for it, it should reward you for many months. We have had customers give us feedback that theirs are still producing after 10+ months. Let us know how you do!
How to Grow Mushrooms article from this NZ Life
How to grow mushrooms: from Stuff (lifestyle section)