Historic gardens and townhouse plots are to be opened to the public to raise money for the St Cuthbert's Hospice appeal.

Fundraisers have organised a four-month programme of open gardens, in which green-fingered enthusiasts can take a peek into gardens normally closed to the public.

The gardens being opened range from private plots and cottage gardens behind houses to an evening guided tour of Durham University's Botanic Gardens, with its tropical house and butterflies, and a rare glimpse of the nine-acre walled garden at Croxdale Hall.

Hospice fundraiser Caroline Broadfoot took her dog, Fizz, to Croxdale yesterday as gardeners prepared the grounds ahead of July's open day.

She said: "They are all very different - there is something for everyone.

"Some have very pretty town gardens up to this, which is unique in the North-East."

The 18th Century gardens at Croxdale are thought to be the only ones in the region to boast a Dutch-influenced "crinkle-crackle" wall, which once had its own central heating system designed to keep the exotic blooms in flower.

Designed by landowner Bryan Salvin in the 1760s, the gardens are home to an original orangery, two lakes, flower beds and tree-lined walks.

Organisers hope visitors will enjoy the tranquillity of the gardens, learn a few tips for their own plots and make a donation to a worthwhile cause.

The season gets under way with a look behind the scenes at a steeply-sloping garden at Gray's Terrace, with excellent views across the city, owned by the Beard family. It opens to visitors on Sunday, June 5