Plant Medium For Living Roof

This family consists of four to five hundred species and thousands of different varieties.

Plant medium for living roof.

The targeted saturated weight of roof top growing media should be 48 65 lb ft 3 3 4 kg m 3. Now comes the growing medium which for a sedum roof should be at least 8cm 3in deep and for a roof of wildflowers herbs salad and strawberries at least 15cm 6in deep. Succulents are plants that store water in a part of the plant. An all purpose soil less peat free potting mix is fine for growing herbs and other edibles but mix in plenty of perlite to both improve drainage and save on weight.

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. Not only is it bulky and heavy it can have potential chemical and pathogen contaminants and if not screened may contain rocks or debris that may make the product inconsistent. Lightweight volcanic aggregate such as pumice or lava. These aggregates make a good basis for a growing medium.

Sedum also often known as stonecrop is a genus of the crassulaceae family of succulent plants. For the best green roof medium the growing media should contain the following. Sedums are one of the star plants for creating a green roof and a sedum roof needs no extra growing medium. The natural properties of sedum make this succulent plant extremely suitable for roof greening.