The gardens, which have been managed by the RSPB since 2011, boast wildlife and birds, a trail with carved wooden garden creatures and a pond.
There is also a living willow tunnel and an insect and bee “hotel” and there are activity days and talks for children and adults.
The acquisition, which also includes land next to the gardens, was made possible after the National Trust, a conservation charity that cares for historic buildings, gardens and landscapes, received support and funding from local groups.
Freeman said the first year of ownership would be spent learning more about the garden and how it “integrates with the site and people connect with it”.
“There will be some small changes but we intend to maintain the spirit of the wildlife garden, that is something we are very committed to,” added Freeman.
“We’re also really committed to connecting it with the wider site at Flatford and providing better access.”
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