Do Community Garden Green Roofs Work?
There are several reasons why the question is arising now. First, as people in cities become more and more divorced from frequent interactions with nature and with farming, their interest in growing produce at home is increasing. Design professionals are, naturally, aware of their clients’ hobbies.
Second, Australian property developers and portfolio managers who are looking to differentiate themselves are taking an increasing interest in rating systems such as the WELL Building Standard, which assesses, among other factors, the quality of experience of any one building by its community.
Using the rooftop to host a garden which the building community cultivates in some kind of common space is thus an enticing notion. It seems an excellent means of meeting various planning requirements, achieving a high rating under WELL, and making use of an otherwise wasted space.
But does it work? Are community garden green roofs viable?
This is largely a question of operational planning, or what we might call the management and maintenance of the green roof. There are various important factors to consider in design, but aside from checking growing vegetables is viable in the conditions in the site and managing the high nutrient run off, the most important design considerations relate to the roof’s management and maintenance requirements.
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