I have Saintpaulia of three varieties, and every spring I propagate them to have more blooming plants. What do I need? The pot is to be very small, and if you plant one only leaf it even may be a plastic cup.
To propagate Saintpaulia I take one leaf with or without a stem and push into a light soil, then I cover a pot with a plastic bag. It's enough to start rooting.
My violet varieties can grow in cool condition, in indirect sun light. When violets are grown up I usually re-plant them in a larger pot.
Next week I will transport my violets to the new greenhouse, hope they will grow well and bloom. It's said they are easy-to-grow houseplants, I agree :-) By the way Saintpaulia can bloom during 2 -3 months.