Accidental mushroom logs!

[Soffit]

Hello. I was wondering whether anybody has any useful tips. I bought some kiln dried hardwood a year ago (or so they claimed). I stored it in a dry indoor place but it bloomed into mushroom logs after a few seasons. I have now deposited it outside (the seller basically ignored me when I complained even though it caused genuine damage including taking root on one of the walls). My question is whether I can put these logs to good use #(there are around 30kg). They are obviously mushier than before and I have put them in a loosely covered plastic container in the garden.
I would like to repurpose them at the bottom of a planter in order to give some height and avoid having to buy a ton of compost. I am only planting green bamboo so I do not need the depth but the height lift would be welcome. However, if I stack them at the bottom of the zinc
planter then will they eventually rot and subside or spout more mushrooms on the surface? I would compost them but I am not a person whom composts. I am wary of offering them for free because of my experience

The mushrooms are merely the fruiting bodies of the fungus. The main fungus is in the form of fine fibres called mycelium, and that will still be in the logs. If it is still alive, it has the capacity to produce fruiting bodies but will do so only when conditions are right.

You say it “bloomed into mushroom logs after several seasons”. It’s most likely that it picked up the spores while in storage, either at the seller’s or, possibly more likely, at yours. But then I see you also say you bought it a year ago.

I stored them in a warm dry kitchen opposite a radiator so I am not sure what went wrong. Perhaps those were ideal breeding conditions. However, they are the same logs people stack in blocked off fireplaces for years without any incident. That's why I think the seller never kiln dried them properly or missold them.

Yes, sounds right. Explains why you couldn’t get hold of him.

Were they worthwhile? The only time we got mushrooms, they were oyster mushrooms. Sadly I didn’t manage to keep the colony going. That was on some logs we’d chopped ourselves

My repulsion was certainly lessened when I realised that they were regular mushrooms rather than mold or a poisonous variety. I never tried them - they had a lovely earthy smell. I forced myself to eat mushroom fettucine the next day to ensure I wasn't put off for life!

Unlikely to be regular mushrooms because they’re not a species that grows on rotting wood. There’s lots of look-alikes.

"regular" fungi or not, I would say that putting the logs at the bottom of a planter to root down would be fine.
They might fruit again in the future, but there isn't anything to be worried about, fungi are an amazing and important part of the ecosystem after all!
I'd be more interested in knowing whether the logs were coniferous (might increase acidity of soil) or something like Oak, sycamore, ash (would not cause acidity)