Our crew are a fluid bunch. Some have worked for Limbwalker for years, others for a few months. Many of our crew are certified arborists, some are landscapers and others, just hard working tree climbers!

Carl Berg has been working in the tree care industry since 1991 and became a certified Arborist in 1998. He has been with Limbwalker since early 2004 and he comes with experience working Hawaii, California, Connecticut, and Oregon. Carl is now the owner of the Limbwalker Tree Care business.


Current Limbwalker crew members:


Carl Berg
Carl Berg, owner
Izzy Mason
Emily Martin
Odin Wium
Odin Wium



Arborist Certification is a voluntary program administered by the International Society of Arboriculture (ISA) to provide recognition of one’s professional knowledge by one’s peers. Certification is earned by passing 3 1/2-hour examination in ten parts covering topics such as Tree, Soil & Water Relations; Tree Nutrition and Fertilization; Identification and Selection, etc.

Candidates for the examination must have three or more years of experience in tree-related work, although academic study in forestry, horticulture, or other collateral field may substitute for one year. And, after becoming certified, the arborist must maintain a certain number of continuing education credits through approved seminars, course work, or workshops. To attain and continually maintain Arborist Certification affirms an individual’s technical competency and indicates an ongoing commitment to professional development.