About 2200 volunteers from local schools, community groups and the general public gathered at a 34ha plot in Whiteman Park on Friday, where they planted more than 100,000 seedlings to unofficially claim the record.
The current Guinness World Record of 99,103 trees planted in an hour was set in Ladakh, India, in 2012.
However, Men of the Trees will still need to collate evidence of the record before it is officially acknowledged by Guinness, the official keeper of all world records.
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READ NOWThey will present film from an overhead drone, photographs, timekeeper and official administrator records to Guinness World Records before the milestone is officially sanctioned.
If, as expected, the record is achieved, Men of Trees will take their place in the 2016 edition of The Guinness Book of World Records, the world’s best-selling reference book published annually that contains a collection of world records of all kinds.