Users of Drews Pond Wood, Devizes, are being asked to donate money for the repair work needed after the recent storms.
Some 17 trees were blown over during strong winds last month and the volunteer group that looks after the wood needs to rebuild the streamside walk.
It has received donations totalling about £200 but estimates the work will cost at least £4,000.
On Sunday the group is holding a donation day at the wood between 10am and 3pm.
Stuart Hislop, leader of the volunteer group, said: “This is your wood and a lot of people take it for granted that it is there. Here is an opportunity for people to make a donation to help us make a legacy.
"If everyone who walks their dog in the wood donated £20 we would soon have £2,000.”
The group has not been able to remove the trees that came down and the walk remains closed.
Rebuilding the walk will be a major task and the group will need a dumper truck, aggregate and timber.
The Drews Pond Wood Project was set up when Roundway Hospital closed in the early 1990s and it has been commended in the South West in Bloom competition for three years in a row.