Welcome Neli!
You have some challenges in Zambia! How hot does it get in the summer? Maybe the high elevation is a plus , since these are mountain plants.
My best performing Semps are from a NOID mix I bought from Lynn.
![Thumb of 2017-05-28/canadanna/d63036](/pics/2017-05-28/canadanna/d63036-lb.jpg)
Thought you might like a pic of "African Hosta" in the foreground