Hello I have these growing can I just cut them and stick them into the earth again will they make roots like cactees etc ? they hang very long and the only the end is nice and I want to cut some and multiply in different areas in our garden as they seem quite happy CAN they shade ??? I some area the LONG would be nice hanging over rock walls in front of the house but in the small rockery its a bit over whelming .. So either I trimm ( will the make new ends ) or do I cut the end and stick it shorted into the earth again ? Thank you ..