I got some Corallodiscus lanuginosus (a Chinese gesneriad) seed from the NARGS seed exchange. I sowed it on January 27 on sterilized peat pellets per my usual method of dealing with dinky seed, put them under florescent lights and was pleasantly surprised to find it germinating today. I may kill it tomorrow but at least I can say I germinated it.
I have a couple of Corallodiscus seedlings from last year. Like yours, they germinated easily -- in my case, inside on a north-facing window sill, with plastic wrap over the pot top to keep it moist.
4.5 inches of snow overnight after a rain/snow mix. Branches are drooping!
Same experience... teensy seeds, teensy seedlings that take forever to put on size. And I did kill them eventually... <sigh>.
Killing them is what I'm afraid of. I have germinated ramonda and gotten it up to reasonable size so I'm not totally without hope. For some reason I can't seem to get ramonda or haberlea to bloom but I can germinate and grow them. Maybe my new alpine'greenhouse will do the trick You're right tho, all those alpine gesneriads are ungodly slow.
"You're right tho, all those alpine gesneriads are ungodly slow."
S-L-O-W is an understatement! Ramondas sometimes seed in pots around them in my north-facing frame and eventually get to blooming size. It does take years. I'll add shortias and jankaemondas to the list of slow growers I am trying NOT to kill.
I germinated Ramonda spp. last season, and I think Deinanthe seedlings are even more miniscule! However they grow much more quickly (thank goodness!).