In areas that are full of concrete and pavement, a new trend in planting a green roof plants has become increasingly popular. In addition to beautifying a home, the green roof also reduces the effects of heat.
What to Look for in Plants for Green Roofs
Green roof plants need to have the following characteristics:
- rapid growth and continual spreading
- ability to tolerate droughts and high winds
- low growth height
- low maintenance - trimming, weeding, feeding
- fibrous root systems
- no specific irrigation and nutritional needs
- low maintenance
- no airborne seeds that spread to land areas
The best roofs are flat however sloped roofs can also work if the pitch is not too steep. With climate a factor, growers need to consider if they need to roof to remain green in winter or cold seasons. Depending on the structural qualities of a roof, the style can be intensive with 12” of soil and a wide variety of plants, versus an extensive style that employs about 3” of soil and a limited selection of plants. Often extensive roofs are easier and less expensive to maintain.
Plant Selection
Plants that are recommended for use on green roofs are:
- hardy succulents - various species of sedum and Talinum
- grasses such as Andropogon, Carex, or Sporoblus
- herbaceous perennials – Phlox, Petrorhagiz
- flowers that attact butterflies and hummingbirds
- various species of low growing evergreens
.
Questions of a Do It Yourself nature should be submitted to our
"