Mr. Lee, can you put them outside? Then the new growth should not have the powder.
Now I am really anxious to start my project to see if there will be any problems. I will plant the substrate with both sempervivum
and sedum. That way I will know if the two types of plants behave differently in the same conditions.
I think I will use two of the Sempervivum 'Big Red' in this experiment. It will be interesting to see how it grows in substrate.
