Dear Slime Mould Collective,
Can anyone make suggestions on growing Physarum in a petri dish? I ordered some in a petri dish from Carolina Biological Supply and it's growing like mad in their dish on oat flakes. My daughter and I transferred an oatflake with lots of yellow plasmodium into a new dish with agar (and old LB medium - pretty inert stuff for growing bacteria). It's been 24 hours and no sign of growth of the Physarum (kept in the dark). We placed three oat flakes on the other side of the dish to see if it could find them.
Justen & Emma