Jörg Wohn is a landscape engineer who is specialized in tree cabling and the traffic safety of trees. Since 2004 he is working for pbs Baumsicherungsprodukte GmbH in Stuttgart (Germany) the home of the cobra tree cabling system. He is responsible for the product development as well as for the customer and wholesaler support. 2008 he started to organize workshops and began to train arborists and wholesalers in the use of the cobra cabling system.