Campaigners trying to save West Watford allotments from being built over are holding an open day to showcase them to the public.

Farm Terrace Allotments, which could be developed as part of the Health Campus project, will be open to the public between 2pm and 5.30pm on Sunday.

The move comes after plot-holders were told in June that the allotments may need to be built in part of the £1bn project, which will see Watford General Hospital re-developed and 600 new homes.

Politicians in the town have said that the 106-year-old allotment land, which was initially protected in the scheme, now needs to be considered to make the project viable for developers.

At a meeting last month Watford’s elected mayor Dorothy Thornhill said the recession had changed the plans as it had made the project more challenging for developers.

She also argued the Health Campus as a whole was essential to the future of Watford General Hospital , which has badly in need of new buildings.

However the news has gone down badly with plot-holders who argue Farm Terrace, off Occupation Road , is a unique and much-needed green area in a very crowded area of Watford.

Chris Brady, a Farm Terrace Allotments spokesman said: "We really hope our open day will be a huge draw for the local residents, as we want to show how brilliant allotments are and encourage people to see the value in having them on their doorstep rather than the land being lost for just another housing development as part of the Health Campus.

"We’re going to have a produce and plants stall with some of the food we’ve grown, and activities for the kids, bring a scarecrow competition, cake stall, and a display about the allotments."