Posts tagged ‘green wall’
June 30, 2008
Green walls are glorious. Take the technology for green roofs and put it somewhere everyone can enjoy it. Regardless of any environmental benefits that may result, just think about how great it would be to coat your entire house with succulents!
The designer that everyone seems to watch is Patrick Blanc – read an interview with him here. He does these fabulous wall sculptures with plants. A steel frame is mounted onto the face of the building (leaving a gap between the frame and the wall), PVC sheets are attached and then felt is used as a rooting medium for the plants. His soiless system uses hydroponics (water with nutrients) to irrigate and sustain plant life.
Most green walls use some type of grid planter system using a frame, cells and irrigation channels. If soil is used as a potting medium, the cells are generally 2 – 4 inches deep and a lightweight moisture-retaining mixture is used. The home gardener can order cells that are slanted, to help keep the potting mixture in the wall.
There are lots of great examples of commercial applications – particularly in Asia and Europe, where green walls are used for company logos. With careful plant selection and planning, the walls can thrive most places – indoor and out.
It doesn’t have to be a full wall either – some designs use green panels like architectural punctuation. Here’s a recent article in Met Home about a garden wall installation.
Interior installations look like art. I wonder if it would give your living room that steamy conservatory smell?
People who sell supplies and install green walls:
here is another post on more wall gardens.
And finally, yesterday’s (horizontally grown) harvest:
February 1, 2008
Types of Green Roofs:
Green roofs have the same basic structure. They consist of the following layers:
- structural support
- roofing membrane
- membrane protection and root barrier
- drainage layer with another root barrier
- growing medium
The main difference lies in the amount of growing medium and what you can grow.
Extensive green roofs have 3 – 6 inches of growing medium that will support mosses, sedums and other low-maintenance native plantings.
After being established, they will generally thrive with little to no maintenance and should not require watering, although spring weeding of tree seedlings may be necessary. These roofs are well-suited to buildings with inaccessible roofs.
A growing number of companies sell preplanted containers suitable for extensive green roofs. These usually contain a mix of hardy, native plants such as sedums, grasses and wildflowers that are appropriate for your climate. These modular systems can be installed directly onto the roofing membrane.
Intensive green roofs have a more substantial 8- 12 inches of planting material, and will support everything from flowers to trees, depending on your structural constraints.
Suitable for the flat roofs of office and condo buildings, intensive roofs may incorporate vegetable gardens, parks, play structures, etc. Because of the increased needs of the plants, an irrigation system may need to be incorporated into the design, as well as access points for weeding, fertilizing, and general gardening. Landscape design services could add considerable value for the end-users of the roof.
Extensive and intensive roofs are only the beginning. Depending on your roof, you may decide on a hybrid combination of the two to best suit your needs. If your roof is more complicated (i.e. has a greater slope than 2:12, has a number of peaks and valleys), get professional professional help -either in the planning or the installation phase.
If your roof just isn’t suitable for planting, consider the green wall approach. There are some fantastic installation possibilities and everyone gets to enjoy the results of your labour…
Ideas for green walls: