Teenagers are believed to be responsible for a spate of crime at allotments in Kettering.
The Margaret Road Allotments in Kettering have been vandalised on four occasions in six weeks, with the latest incident happening on Sunday evening.
On Saturday at about 5.45pm, the vandals broke sheds, smashed pumpkins and threw stones.
Police were called to the incident but could not find those responsible.
Dai Johnson, treasurer of the allotments, said he could not understand why people would commit such “mindless” acts of vandalism and theft.
He said: “The first incident was about six weeks ago, when ten sheds were smashed and generally vandalised.
“Then about a fortnight ago it was 15 sheds, and last Monday (October 15) 20 sheds were targeted.
“It’s soul-destroying, and we’ve had some people saying that they’re going to give it up – they only want to get on with their hobby.”
Allotment holders have said that even though a number of sheds have been broken into, not many items have been taken, apart from a couple of garden strimmers and other gardening items.
One plot holder, Benito Caruzo, has said he has not spoken to the police because he believes they will not be able to catch the culprits and they have more important issues to deal with.
The retired 75-year-old from Russell Street, Kettering, said: “I don’t know why the culprits do it or why they have got to do that.
“I just can’t understand it, it’s just breaking things for the sake of it.”
Police have said they believe they are looking for three teenagers aged between 17 and 18 years old.
They have received reports of three sheds being broken into on the allotment and also report that the neighbouring Green Patch was broken into on October 1.
Officers from the safer community team will be increasing their patrols in the area and they have also offered crime prevention advice to the allotment members.
A spokesman for the police said: “We are looking into the incident. We are asking for any witnesses to come forward on our 101 number.”