Events Supporter events Bolham Manor Open Day Bolham Manor is opening up its stunning three acre garden on Sunday, 1st March to the public. Entry is £3.50 and children may look around the garden for free. Bluebell Wood will be there serving tea, coffee, soups and cake for visitors who would like to make a donation to the hospice. For more information about Bolham Manor open days, please click here. Bolham Manor is located on Bolham Way in Retford.