Lightweight Plants For Flat Roofs

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.

Lightweight plants for flat roofs.

A green roof usually consists of shallow plastic or metal trays filled with sedums grasses or perennial wildflowers. 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. 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.

40mm high perforated edge drainage trim for bauder sedum blanket. It s lightweight and easy to install. 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. Ensure the container is lightweight and has ample drainage holes in the base.

Flat roofing is not actually flat. Use a layer of lightweight drainage material at the base of the container such as polystyrene plant trays broken into crocks. In terms of handling and for practical reasons soil alone or topsoil for roof gardening can be difficult to work with in comparison to manufactured soilless media. 2 al40 edge trim frames and retains the xf301 system.

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. Sedum vegetation blanket instantly providing at least 90 coverage on an extensive green roof. It has a very low slope between 1 4 to 1 2 inch per foot so that it drains water. Lightweight but sturdy resists shrinkage and wind displacement stable to support plants soil.

Some companies such as green tech ltd offer a range of light weight soils and composts suitable for roof gardening. Sedum grass herbaceous perennials shrubs trees or horticultural plants including urban vegetable gardens. A green roof can be done on any roof even a slanted one. 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.