Yes my apologies I meant "sow". Thanks for the info, I'm not sure if I should go back experimenting with peat moss again. You never sow them in LFS?
It would be nice if someone can shed light on why we get black growth tips, but for some reason we still can't figure out if it's humidity or some kind of pest or disease, but at least for you it bounced back! Oh a few times I would actually cut off the black growth tip, and sometimes the plant will produce a new tip from a node or sometimes it dies!
I think depends on the size of the plant.
TTFN
Arvin