I have a small streptocarpus that I want to propagate with a leaf cutting. I'm a little worried about the mother plant. I was not able to get any of the stem as you can see. I was wondering how you experts think would be the best way to propagate it. Should I just put the cut portion into soil and cover with the dome or cut the spine out of the leaf and bury the leaf portions sideways? What do you all do to get the greatest success?