Outdoor Plants For A Green Roof
There are many different varieties of green roofs, all of which may incorporate some form of living plant matter. For a green roof, choose outdoor plants that are up to the task of making the roof part of the living landscape. Here are several outdoor plants for a green roof. Rooftop vegetation is exposed to intense heat, drying winds, extreme cold, and must be able to thrive in just a few inches of soil. Of all the outdoor plants in the world, succulents offer the greatest variety of species that are suitable for a rooftop environment. Also known as stonecrop, this large and diverse genus contains dozens of species suitable for a living roof, most of which are low-growing groundcovers. Sedums are virtually maintenance free, requiring just a bit of water to get established and then spreading freely as long as they are in sun or partial shade.
Houseleeks are another good outdoor plants for a green roof. These plants also known as sempervivum and grow as a tiny groundcover under four inches tall, unless otherwise noted. They are a great complement to sedums, as the foliage has a strikingly different growth habit. Like sedums, houseleeks require no care to speak of, but it is important that the soil mix be extremely well-drained.