Vertical Hydroponics

I’ve just put up a revamped article on  vertical hydroponics which I first published on the Biotecture website.  I put it here because it’s relevant – even accounting for commercial bias – to the understanding of urban greening.  Actually, it’s not biased; my trialling and efforts simply showed that hydroponics work better, are more resilient (discounting the felt-based hydroponic systems) and lower maintenance.

The Biotecture system uses rockwool, an expanded basalt rock, which is inert and very stable.  Interestingly, I wouldn’t use it as a growing medium for food production (although this is its primary commercial use) because I think there are recycling/disposal problems with the material, at least when used on a small/home scale.  So although I’ve trialled a lot of veg (50 varieties) and they’ve all grown successfully, I will be developing another system for veg production.  The whole idea of vertical urban food to me is to nurture independence, not dependence on supplies of a product that the end user cannot manufacture or directly re-use.  Having said that, I’ve got a baby-leaf salad wall growing right now (at Biotecture) for a show!  Displaying possibilities is also important to capture imagination…

Vertical Salad Wall by Mark Laurence/Biotecture

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