it is a huge ongoing trend. i saw my first next to the caixa forum in madrid last autumn and then i saw several in japan and then the one on the facade of the galleries laffayette in berlin. ever since last year, i’ve been wanting to make one of my own on my balcony but i wonder if it’s such a good idea, as i don’t have too much direct sunlight. but, until i make up my mind, here you have a film showing you how to build one and a faq link.
if i get my own garden, i promise to post pix. if u do, pls let me know! thank you!