Madeira Cove in Weston-super-Mare was spruced up with maritime species to reflect the natural flora, along with plants such as wild leeks and rock sea lavender. The work was part of a Sea Change programme funded by CABE.
But the shabby state of the 300sq m seafront garden a few months after work was completed by contractors and volunteers has drawn complaints from an elected member at North Somerset Council.
Town and district councillor Robert Payne said the Victorian garden at the northern end of the shoreline had been forgotten about and had become an eyesore. He complained of a lack of upkeep.
A local authority spokesman admitted that the garden was in need of more work. Officials had visited Madeira Cove with contractor Wyevale to agree a programme of works.
"The garden has become overgrown but we have agreed a programme with our contractors to tidy up and maintain it over the winter. It hasn't exactly gone to wrack and ruin but it's fair to say it's been a little neglected."