Spurred by the energy crisis post-Fukushima, there’s been a notable increase in the number of mid-rise office and retail buildings with green walls. In an over-built city, vertical surfaces are the largest potential area for gardening, farming, and habitat creation.
Tokyo has far more vertical surfaces than roof areas, and we are only at the very beginning of creating an urban forest.
I have been following this topic for a while, and have watched this idea spread from notable public spaces like Suginami’s ward office (world’s largest green curtain) to apartment balconies, flower shops, and now commercial and retail spaces. This wide distribution across Tokyo and across building types is very exciting to see.
Some questions I have include:
- What types of plants can be grown vertically and for what functions: aesthetics, habitat, scent, seasonal change, food?
- How can green walls enhance innovative architecture and place-making?
- How can vertical and roof gardens connect buildings, neighbors, and wildlife?
- What is the impact on heat island effect, global competitiveness, and quality of life?
The answers will come from experimentation and diffusion. The photos, from top to bottom, are four green walls I’ve recently seen:
1. Hasegawa Green Building in Shiba Koen
2. Office mid-rise in Shinjuku Gyoen-mae (2 photos). The company that created and maintains this green wall is called Ishikatsu Exterior (石勝イクステリア).
3. Oimachi retail building near station.
4. Daimon office building.
With Chris’ help, I posted a photo essay about photos and buildings on Tokyo-DIY-gardening. It’s easy to imagine how plants can soften the built environment. Looking at plants in the city I am also struck by how buildings make plants even more beautiful. The essay asks more questions than it answers. Looking at everyday Tokyo streets and non-landmark places provides a starting place to consider environmental aesthetics.
It’s wonderful to see rice growing in a simple residential street garden, alongside geraniums and other ornamentals. The rice is nearly ready to be harvested. Below you can see that it is growing in a blue plastic pot and a white styrofoam box. What it lacks in aesthetics it exceeds in frugality and resourcefulness.
I haven’t seen this neighbor in a while, since she offered us some beer on a warm day; unfortunately, we did not have time to stop then.
Yamada Yuriyuki (山田順之) , a biodiversity specialist at Kajima, one of Japan’s largest construction companies, appears in a video on Japanese TV about Kajima’s beekeeping and biodiversity education work. Kajima has started a hive in one of their buildings, and is studying how and where bees travel.
Yamada-san makes the important point that “greening” is not just about aesthetics but about eco-systems. Bees play an important role because they pollinate fruit trees that in turn attract birds. Bees also scare away crows. And it is because of the decline of bees in the wild that farmers need to manually pollinate fruits and vegetables. The video also shows how Kajima has educated school kids about the value of bees.
I am curious how far bee-keeping can take off in Tokyo, and the connections its advocates can make with native plants, urban wildlife, and city agriculture.