Complete Weed Control has rid Centre Parcs new £250 million holiday village of bracken in what it called "a very challenging task."
After a decade in the planning, the planned opening of Woburn Forest next year faced a significant stumbling block.
Large open tracks of the undulating forest landscape were beset by bracken, giving it an unappealing monoculture and smothering other plant life, as well as being unfriendly to some wildlife.
Centre Parcs turned to Complete Weed Control which had previously cleared moss and algae from chalet roofs at other Centre Parcs forest locations.
South Wales franchisee Alan Abel said: "We were stunned by the extent of the bracken problem at the Woburn Forest site. It was a very challenging task."
The company performed a full survey and recommended the Asulox herbicide.
In August and September 2012 bracken on seven hectares of the site was successfully treated at a rate of 11 litres per hectare. But the contractors faced an impending withdrawal of the product.
This summer however, the Chemicals Regulations Directorate permitted an extension of Asulox usage until September 18 allowing the rest of the bracken to be destroyed.