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Plants for green roofs with soil depth 100mm

Turn the top of your garden structure into a home for plants and a welcome haven for wildlife.

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As wildlife habitats decline, green roofs can help to redress the ecological balance – a tiny step, but in the right direction.

See below for our pick of plants for your green roof with a soil depth of 100mm.

Thrift

Armeria maritima is at home on cliff ledges and rocky outcrops. This plant is a born survivor, and keeps its tufty leaves all winter. There are cultivars with deeper pink flowers, but the species is the prettiest.

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Poppies

The little Japanese poppy Papaver miyabeanum is easy to grow – sow it direct or in modules. It’s a short-lived perennial and will self-seed. Alternatively, try the pictured orange California poppies (Eschscholzia californica). Flowers May to June.

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Auriculas

Tougher than it looks, Primula auricula is a mountain dweller. It has leathery leaves to withstand rough weather and extremes of heat and cold, and deeper roots than many of its relatives. Flowers from March to May.

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Rhodohypoxis baurii

Although it needs dry winters, this delightful South African bulb should be happy in the well-drained conditions of a roof. It spreads by underground stolons to form large, vibrant clumps. Flowers June to July.

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Encrusted saxifrage

Saxifraga ‘White Pixie’ is an evergreen alpine plant that produces pretty sprays of white flowers. It’s best planted in sun or semi-shade. Flowers May to June.

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Kate Bradbury says

If your shed has a pitched roof, then it’s likely one side will get more sun than the other. Choose shade-tolerant plants for the shadier side, or install a mirror to reflect sunlight onto the roof, enabling more sun-loving plants to grow.

Kate Bradbury