The association says the group will "promote and engage women in Arboriculture at all levels, from contractors to consultants, academics, suppliers, Tree Officers and support staff alike".
Participation arboriculture is heavily weighted towards men, with women accounting for only 13% of Arboricultural Association members.
Arboricultural Association technician member Lisa Sanderson has prepared a series of articles on "Women in Trees", with case studies of successful female arborists.
Arboricultural Association Registered Consultant Lesley Adams advised: "You may meet narrow minded people in your life but it doesn't necessarily mean they are sexist or that you have no place in the industry.
"Those people exist everywhere and you may meet them in both your working and personal life but you should carry on, work hard and do the best you can. Make friends and always find someone to share ideas with - it's an enormous help."
The group will hold an open lunch forum at the association's ARB Show 2018 on Saturday 12 May, to which all those with an interest are welcome.