Thanks Mike,
I didn’t want to pick the whole thing to try to grow it on as I know is possible. I did get a stunning growth of Physarum album which had been āincubatingā in a plastic box in the garden for several months. The slime had spread onto the surface of the water and was starting to form sporophores there. However, only the part of the plasmodium on the wood successfully developed.
Cheers,
Steve