These were set several months ago and basically watered when i remembered , however we have had an exceptionally wet Spring and Summer .The medium used for the layers was 75 % scoria and 25 %  spagnum moss . I have been using this mix on most of the layers set this growing season with very good results over spagnum moss only . These were potted into Bonsai pots to enable a flat root mass to be produced .With a selective hard trim , then wired and styled  they will sit in the weather in a water tray  and grow on . With very little information on the internet these will be left to their own device . The only info is caution when root pruning as the don’t like disturbance , however being a tea tree i take this info with a grain of salt as my experience with Tea Tree.s and Melalueca’s is they grow when pushed out of the ground and  into heaps ready for burning . I do plan to set another dozen layers on the same tree so either way i will have enough stock to test the information reguarding root pruning .Cheers Alpineart