text: The Conservative know that they need to turn large parts of the country blue on May 7. And the Camerons seemed to have taken it rather too literally, with both David and Samantha getting stuck in with blue paint while on the campaign trail. While Mr Cameron was messing about with Boris Johnson in Surbiton, his wife was 200 miles away in West Yorkshire giving a lick of paint to a charity project. Scroll down for video . Samantha Cameron picked up a paintbrush to help at The Growing Zone allotment project, a community project for children and adults with special needs . The Prime Minister's wife was campaigning with Conservative candidate Alec Shelbrooke (centre) in the seat of Elmet and Rothwell . Mrs Cameron has made several solo appearances during the election campaign in key seats, today supporting Tory candidate Alec Shelbrooke in Elmet and Rothwell. She visited the Growing Zone, an allotment garden project for adults and children with special needs in Kippax, West Yorkshire. She was introduced to various activities by June Perkin, who founded the scheme seven years ago after getting disillusioned by aimless families and youngsters she watched in a Leeds shopping centre one afternoon. Mrs Cameron was even persuaded to help paint a wooden plant stand, which is being reconditioned and brought back into use by the volunteers and children. Mrs Cameron was introduced to various activities by June Perkin, who founded the scheme seven years ago after getting disillusioned by aimless families and youngsters she watched in a Leeds shopping centre one afternoon . Mrs Cameron said the best thing about campaigning was 'getting out and about - meeting amazing people like June' 'It's great to be in Yorkshire,' Mrs Cameron said. 'The best thing about a campaign is getting out and about - meeting amazing people like June. 'The Growing Zone is an inspiration. It's been lovely meeting everybody here today and seeing what an amazing job they do changing the lives of so many people with disabilities.' Mrs Cameron made her first appearance of the campaign in Rochester and Strood, which was won in a by-election by Ukip's Mark Reckless after he defected from the Tories last year. She joined her husband on a whistlestop tour of the UK, visiting Scotland, Wales, England and Northern Ireland in a single day, and at the weekend the couple visited a Sikh temple in Gravesend. Mrs Perkin said of Mrs Cameron's visit: 'It was absolutely brill. Using the words the kids here use, it was cool. She had a good look round and she was very, very interested. 'She understood everything we're doing and what we're about. And the kids loved it. Do you see their faces?' After taking nine minutes to complete a puzzle, Boris Johnson and David Cameron were relieved to try their hand at hand painting, which they found much easier . The pair were at the nursery in Surbiton to promote a Tory pledge to double free childcare for working parents of three and four-year-olds to 30 hours a week . Describing her inspiration for the project, Mrs Perkin said she had been sitting on her allotment one night, sipping a gin and tonic and thinking how great the environment was compared with the shopping centre where she had got so angry earlier in the day. She said: 'I just thought that these people here, on the allotment, have got things right. 'There's no point moping, I may as well get on with it. So I just grabbed a spade and here we are now.' She said many of the volunteer helpers are retired people who can do as much or as little as they like on the colourful site. There were 3,000 separate visits by children from a wide area last year, Mrs Perkin said. Meanwhile, at a nursery in Surbiton, Mr Cameron and Mr Johnson were left scratching their heads today as they struggled with a children's jigsaw teaching toddlers about the seasons. As the London Mayor tried to hammer ill-fitting pieces together with his hands, the Prime Minister tried out what could be a new election slogan, telling him: 'If in doubt, wedge it in.' After being put right by a four-year-old who spotted their errors, the pair had more fun finger painting with Tory blue paint.
target: Samantha Cameron makes solo campaign visit to a charity project .
  Growing Zone project helps children and adults with special needs .
  Says the best part of campaigning is 'getting out to meet amazing people'