Rimacactus Lauii seedlings

[pleun]

Recently I sowed 10 seeds of Rimacactus lauii and now I have 3 seedlings in a sealbag.
Does anyone have tips for me how to keep them alive.......I sowed them in pure catlitter.
Shall I keep them inside the sealbag ?
Does anyone have seedlings on own roots ?
Greetings Pleun

[iann]

I know one or two people on the forum have grown these, but maybe they are keeping the secret The general rule if you want them to live is to graft them early. I wouldn't keep them in bags for long, since they don't need much of an excuse to rot.

[KarlR]

I don't have much experience with them, having only sown the species once, but I would probably not keep them in the bag for too long. If you're able to spray or mist them regularly, I'd probably consider taking them out of the bag within a month. I think that's about as long as I kept mine in a bag, although it's certainly possible they can stay inside one for much longer than that. They are fairly rot prone I think.

[Mal H]

Like you I germinated 3. These were from 10 seeds I obtained from Mats' Succseed and I left these in the bag for ~4 months after germination without problems. I had plans to grow them on their own roots but there was only the report of a rare 'success'. Since it seemed graft or no plant I had a go at what I always wanted to resist, but my Eriosyce obsession required it.

The problem, if you read old threads on here, is that the seedlings are like over-ripe grapes. When you cut them with shaky hands like mine they kind of implode. So after two failed attempts I managed to use the point of a scalpel to pierce and then cut my last seedling at the root neck. I grafted onto Echinopsis and used Christer's tip of superglue and held the seedling down for 5 min with the flat of the blade until the glue set. This worked-ish...... I don't reckon I got the best union between graft/scion because the lauii grows very slowly for now.

Here is a pic:

I reckon when much bigger I will be able to bury this and I have seen several plants where the stock is completely obscured so that the lauii is the main show. Fingers crossed.
Good luck.

[pleun]

Thank you all for your replies. I think I will let them in the sealbag till May and then try to graft two of them on opuntia compressa.
Pleun