Active job

Villa Garden landscape

We need help to redesign our garden, 100 yo villa on 1/4 acre section in Taihape. Yard is sloping at back down to a wee creek. Lots of lovely old flowering plants, bulbs and roses as well of lots of large vegetable garden beds. We are not good at gardening but I love the flowers so would like to retain some of those plants. Would like a deck built as well and maybe look at retaining walls to level off the yard.