I would like to share the seedlings of these species.

Hi Steve,

I think it will be better specify the species and how long have they been in the bag?
Pictures will help too.

I took the seeds that didnt germinate by itself and put them in a cup filled with water. They waited in this cup 2days. Then put the seeds into water-bleach solution. Chip the hilums and put them into bag. 3days after first germination observed, today 3 more seeds germinated.

I cross pollinated Strombocactus discoformis and Turbinicarpus schmiedickianus and here is the result.

I have still some seeds to sow, i will not graft them so anyone has an idea how to treat the seedlings?
Let them grow in the bag or take them out of the bag?

Some seeds germinated without doing anything special. But germination rate is low, i will scarify them.

I ve just found this link by chance, maybe it helps.

http://manchester.bcss.org.uk/home/pots ... -sundries/

I think not bloomed yet.