The chairmen of both the Arboretum Trust and Friends of the Arboretum believe a new wave of volunteers is desperately needed and will guarantee the ongoing future of the world class showpiece of Australian flora and fauna.
Chairman of the Arboretum Harold Harris said the complex which is 50 years old this year is maturing and growing.
"But the way forward is through new younger people joining as volunteers and helping the Arboretum grow further,'' Mr Harris said.
At a luncheon on Sunday to thank the volunteers, state government and businesses who have supported the Arboretum Geoff Cook said education about the community facility is delivering awareness.
"It is something we as Wellington should be very proud of. There are 2000 Australian flora species here and some are rare and endangered and here they flourish in a wonderful and amazing Botanic Garden," Mr Cook said.
"We have an ageing volunteer group and we need to find more volunteers to be active members. I see this as potentially our biggest problem as we look to the future."
The Burrendong Botanic Garden and Arboretum was established in 1964 and covers approximately 167 hectares.
It is dedicated to the preservation and conservation of Australia's unique and diverse flora.
Mr Cook said support from both business and the community ebbs and wanes but the Friends of the Arboretum are so thankful for the dedication of its small full time staff and those who are involved in ensuring the gardens are kept to the highest standards.
In its 50th year the birthday of the Arboretum and Botanic Gardens will be celebrated on a larger scale in September as a special second day of the Springfest event