– Compton Acres invites you to escape to a different world. Twelve individual gardens, set in ten acres with spectacular views over Poole Harbour, Brownsea Island and the Purbeck Hills. The old English Garden – This Garden is formed of these double herbaceous borders set against tall wild Rhododendron ponticum hedging which is trimmed annually. Purbeck stone walls built by Cornishmen during 1954 – 1955 using hand dressed stone replace banks of peat walling and Irish Yew. The wall to the left is home to various wall shrubs.