Bradford’s sporting heroes have stripped off and bared all for a series of saucy charity calendar snaps revealing a little bit more than their green credentials.

Using only rugby balls to cover their modesty, Bulls aces Glenn Morrison, Sam Burgess and Chris Feather have shed their clothes for the raunchy calendar to raise funds for tree-planting in the Yorkshire Dales.

They are joined by Bradford City’s current player of the season, Joe Colbeck, and Bantams defenders Matthew Clarke and Simon Ainge in sexy poses in the colourful calendar.

Celebrity gardener Sven Wombwell, well-known TV vet Steve Leonard and adventurer Monty Hall have also been persuaded to get in the buff for the Yorkshire Dales Millennium Trust.

Players from rugby clubs across the north of England, including Skipton Rugby Union Club, have also agreed to take part to help protect the stunning countryside and wildlife in the national park.

Aussie international Glen Morrison said: “I have had a couple of calendar shoots in Australia but I have never been naked inside a gym before!

“It was a little bit embarrassing; we were in the shed and all the boys were running around and yelling outside, so it wasn’t the easiest thing to do. But it is for charity and they asked us if we could do it to try to raise some money for the Yorkshire Dales and we said we would be happy to help out.”

The Yorkshire Dales Millennium Trust (YDMT) has so far planted more than 500,000 native broad-leaved trees in the area.

However, a spokesman said tree cover in the national park is still well below the national average of nine per cent and more work was needed to reduce carbon dioxide emissions.

She said: “The Yorkshire Dales Millennium Trust is dedicated to caring for the environment. All monies raised from selling the calendar will go towards tree planting in the breathtakingly beautiful Yorkshire Dales and help reduce CO2 emissions.

“Trees and woodlands are crucial to life on our planet. They generate oxygen, store carbon and stabilise the soil.

“The YDMT aims, through the production of this calendar, to plant even more native broad-leaved woodlands which will support the needs of society in both urban and rural areas and provide a legacy for future generations.”

The calendar costs £9.99p and is available by calling (01524) 251004 or visit the trust’s on-line shop at ydmt.org.

e-mail: marc.meneaud @telegraphandargus.co.uk