This year's event is set to be staged on Sunday July 9 in Castle Square in Ludlow.
However, organisers are keen to "get the ball rolling" and are urging previous volunteers and anyone wishing to help out, or who has ideas and suggestions on how it should be run, to come forward.
"Tish" Dockerty, chairman of Ludlow 21, the community group behind the festival, said: "This will be the festival's 23rd year and usually we have about 15 volunteers who organise the event.
"There are about 10 other volunteers who also help out but we would encourage anyone who has ideas and suggestions or wants to offer help or who like to get more involved to come forward.
"We will be holding the first planning meeting for the Green Festival on January 31 at 7.30pm in the upstairs room at The Rose & Crown.
"We would love to see previous volunteers come along as well as new faces.
"For anyone who cannot make the meeting I would urge them to contact the secretary of Ludlow21.
"The festival is the largest event of its kind in Shropshire and is organised by the local voluntary group to promote sustainable living.
"We try to feature anything to do with the environment such as advice on solar power, food issues, the up-cycling of clothes and many other things.
"It is a fun event for families with about 43 stalls, various activities in which they can take part and live music.
"These are all provided free-of-charge to families which is why it appeals to so many people."