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The leaves are conker brown, the sky is a brilliant blue, the morning's have a slight chill to them and Autumnwatch is back on the telly.

Bill Oddie, Kate Humble and Simon King are celebrating the great outdoors and we want you to join in the fun on Saturday, 10 November, 2007 at Norwich's Treemendous Tree Challenge in Cathedral Close.

Traditional oaks, spreading sycamores and majestic elms are what make us visit Norfolk forests and woods.

Everyone loves trees, but in urban areas they often go unnoticed, even though they bring a touch of the countryside into our towns and city.

The Norfolk Wildlife Trust and Norwich City Council aim to change all that with a new tree trail around Norwich.

Tree trail

The trail highlights six trees, which if you visit before the weekend, could land you your very own tree to plant and cherish in your garden thanks to the Norfolk Wildlife Trust and ³ÉÈË¿ìÊÖ Breathing Places.

They have produced a leaflet with pictures of the six trees and a question about each of them that can only be answered by taking the trail and going to see them.

The completed leaflet can then be taken to Norwich Cathedral Close on Saturday, 10 November, 2007 between 10am and 4pm for a chance to claim a free tree.

"I think the Treemendous Trees Trail is a great way to enjoy some very special trees in Norwich," said David North of the Norfolk Wildlife Trust.

"Every day we walk past these trees without appreciating their beauty. We all benefit from them - they clean the air, they give us shade in summer and shelter in winter," he added.

Looking at your trees

As part of the Tree Party celebrations for Autumnwatch and Breathing Places, ³ÉÈË¿ìÊÖ Look East wanted your photographs of trees from across the eastern counties.

Tree on film

³ÉÈË¿ìÊÖ Voices, the ³ÉÈË¿ìÊÖ's story-telling and media training centre in Norwich, has got involved with the project by filming the tree champions - each explaining why they are so proud to promote their chosen tree.

³ÉÈË¿ìÊÖ Radio Norfolk breakfast presenter Stephen Bumfrey has fallen in love with a 200-year-old horse chestnut in St Stephen's churchyard, near to the entrance of the Chapelfield shopping centre.

"Conkers come from the horse chestnut and I was the best at conkers in my playground. The secret was soaking them in vinegar overnight and then baking them in the oven," he said.

Sheree Leeds of the Chapelfield Society tells the story of the Deodar pine tree in Chapelfield Gardens.

"The area around the Deodar is a favourite place for children when it snows. That's because its pine needles are shaped so that the snow falls off, protecting the tree and creating heaps of snow underneath," she said.

³ÉÈË¿ìÊÖ Look East weather forecaster Jim Bacon knows that one of the severest storms we've had in Norfolk took place in 1987.

"It's probably why I love the London Plane in Chapelfield Gardens," he said.

Other tree champions are Gemma Walker of the Norfolk Wildlife Trust who loves the silver birch on Tombland, a tree that has seen thousands come and go over the years as they walk into Norwich Cathedral.

And Mike King, general manger of the Assembly House, is rooting for the giant beech which sits in the grounds of the venue and spills its leaves into Theatre Street.

³ÉÈË¿ìÊÖ Voices has also produced a seventh tree film exclusive to bbc.co.uk/norfolk.

"The Elder tree in Ber Street is a record breaker," said David North of the Norfolk Wildlife Trust.

"It's in the grounds of a pot company and I think it's probably one of the largest in the country - certainly one of the largest in Norfolk," he added.

The Norwich Tree Party takes places on Saturday, 10 November, 2007 in Cathedral Close.

Discover The Treemendous Trees Of Norwich leaflets are available from the ³ÉÈË¿ìÊÖ's reception at The Forum in Norwich, the Norfolk Wildlife Trust, Norwich City Council and by calling the ³ÉÈË¿ìÊÖ Radio Norfolk Action Desk on 01603 631631.

Autumnwatch can be seen Monday to Thursday from 8pm-9pm on ³ÉÈË¿ìÊÖ2. The series runs until Thursday, 15 November, 2007.