After killing more than a couple of Leptospermum Scoparium (NZTeatrees, Manuka, Erika Japonica), I want to share my success in keeping one alive for the last six months.
It's a pink cultivar, as difficult as the red one; there is also white cultivar more forgiving, of which I am training two to become bonsai.
I am not bragging about it, just sharing my experience with this species, considered the most difficult to keep as bonsai.