It'll be on the site of the RSPB's Bowling Green birdwatching hide.
The hide itself will also be improved with lighting and heating.
The garden will be available for use by schools and community groups as well as the public.
The funding, of more than 26 thousand pounds, has come from the Viridor Credits Environmental Company.
North Molton storm overflows halved
Water storage tank added at treatment works
Devon County Council elections - all the candidates, all the wards, all the key dates
All the information you need
Exmoor Coaster service coming back under different name
'Explorer' subsidised by county councils
Bodmin Moor fires are suspicious
Police asking for help over blazes on Saturday
Storm overflow prevention work set for Plymouth
But it will take five years
Help needed to find Exminster pensioner
Concerns for Charles Fulton, 74
