Perhaps it’s the tidal pull of the nearby North Sea, but when you stand at ground level in this garden in Zeeland, the Netherlands, the entire house appears to be floating above its concrete base. This impression is only enhanced by a series of three green-roof gardens suspended above ground level. It turns out this floating illusion is entirely by design, in a split-level collaboration between Dutch architect Bart Vos and landscape designer Piet Oudolf, with logistical support from Dutch designer Tom de Witte.
The roof gardens came high on the client’s original wishlist – designed for optimal viewing from inside through the upper-storey bank of windows. Piet updated his essential matrix concept for the occasion in what he describes as “a complex matrix with everything repeating” to create a low shimmering haze of resilient perennials and grasses.
Top tips for creating a successful green roof
Dutch garden designer Tom de Witte shares essential advice for roof and podium planting
• Before all else, consult a structural engineer to ascertain the load-bearing capacity for a given roof structure. This determines the maximum depth of engineered soil substrate, allowing for rain saturation and drainage with a minimum two-degree slope.
• What are termed 'extensive' roofs have substrate depths of less than 15cm deep, which is better suited to simpler, low-maintenance plantings. This project has 'intensive' roofs with a more generous depth of 15-20cm, comprised of recycled brick, soil and lava rock. Greater depth allows far more planting options.
この記事は Gardens Illustrated の July 2023 版に掲載されています。
7 日間の Magzter GOLD 無料トライアルを開始して、何千もの厳選されたプレミアム ストーリー、9,000 以上の雑誌や新聞にアクセスしてください。
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この記事は Gardens Illustrated の July 2023 版に掲載されています。
7 日間の Magzter GOLD 無料トライアルを開始して、何千もの厳選されたプレミアム ストーリー、9,000 以上の雑誌や新聞にアクセスしてください。
すでに購読者です? サインイン
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