6. Devon and Cornwall Wednesday 14 June

Trematon Castle, Saltash – Mr and Mrs Julian Bannerman

In 2012 Julian and Isabel Bannerman sold Hanham Court, their house near Bristol, and took on the lease at Trematon. They acquired a real castle, complete with battlemented keep, and a late Georgian house with spectacular views across the River Tamar to the Navy at Devonport. In only three years they have created a sumptuous garden. To one side of the house, the keep stands on its wild-flower-studded mound, cowslips and primroses in April, ferns, wild thyme and marjoram in summer. A great sweeping bank, decorated with signature Bannerman obelisks, is awash with Iris, peonies, roses, Salvias and Campanulas. Rambler roses are trained against the walls, the gatehouse border is another mass of roses and peonies. Euphorbias are everywhere in the spring and Echiums in the summer. It is a work in progress, but what progress has been made.

Shilstone, Modbury – Mr and Mrs Sebastian Fenwick

In 1997 Sebastian and Lucy Fenwick discovered a Grade II listed farmhouse in a secluded valley. Intrigued by the landscape surrounding the farmhouse, which was all that remained of a substantial manor house; they bought the property and then built an entirely new house, which reflected three periods of English architecture; the 1600s, 1690s and 1730s. The result is a remarkable and beautiful house, which feels like an old house that has been brought into the 21st century. The garden reflects the history of the site, excavations showed terracing around the natural amphitheatre of the valley. The walled garden to the west of the house still has its raised walkway and gazebo tower, while below the house lie the remains of a Jacobean grotto, possibly the earliest in the country. We will be given a tour of both the house and the garden.

Ince Castle, Saltash – The Viscount and Viscountess Boyd of Merton

Ince Castle is approached by a long avenue and is an unusual and attractive, crenellated building, dating from the mid 17th century, with low square towers at each corner. It stands on a wind-swept peninsula of the River Lynher, part of the complex estuary that makes up Plymouth Sound. In 1960 Patricia, Lady Boyd started to design the garden, laying out the formal garden to the south of the castle, with a wisteria lawn leading down to a lily pond and built the enchanting shell house and dovecot in 1964. The woodland garden, planted with magnolias, camellias and other shrubs around the 19th century bowling green was created at the same time. The current owners, Simon and Alice Boyd, have lowered the lawn on the east side, added the wooded mound and the evergreen oak allée.