Lightweight Plants For Flat Roofs

A green roof can be done on any roof even a slanted one.

Lightweight plants for flat roofs.

A green roof usually consists of shallow plastic or metal trays filled with sedums grasses or perennial wildflowers. A deciduous shrub with a funky common name harry lauder s walking stick corylus avellana contorta twists itself into seemingly unfathomable shapes that are good sculptural plant accents to a rooftop garden. It reduces loading on the structure of the building even when saturated with water up to xx lightweight substrates that incorporate expanded clay are compatible with all climates and all plant types e g. Try dry habitat perennials and ornamental grasses such as rudbeckia achillea potentilla armeria dianthus helictotrichon sempervirens stipa tenuissima and even bulbs such as muscari or small allium species such as allium flavum and a.

Use a layer of lightweight drainage material at the base of the container such as polystyrene plant trays broken into crocks. Carex nigra is technically considered a sedge and is often used on living roofs because its roots require less soil than most other grasses or grass like plants. 1 xf301 sedum blanket system with integrated water retention and filter layer. A step up in size and cost from sedums is wildflowers especially hardier lower growing natives alpine plants and bulbs.

2 al40 edge trim frames and retains the xf301 system. Lightweight but sturdy resists shrinkage and wind displacement stable to support plants soil. Ensure the container is lightweight and has ample drainage holes in the base. The heart shape foliage on the shrub or small tree which can reach 10 feet tall and is hardy in zones 4 8 is interesting too.

Flat roofing is not actually flat. Roofs that are easy to access can be suitable for growing hardy herbs such as thyme prostrate rosemary or chives. It has a very low slope between 1 4 to 1 2 inch per foot so that it drains water. 40mm high perforated edge drainage trim for bauder sedum blanket.

It s lightweight and easy to install. Sedum grass herbaceous perennials shrubs trees or horticultural plants including urban vegetable gardens. But such a low slope holds snow and water much longer than a steeply pitched roof and therefore needs a very different material to stay watertight. A roof garden usually consists of larger planters filled with a mix of evergreens flowers shrubs and grasses.