The garden was showcased as part of the Royal Horticultural Society flower show’s urban rooftop design category and truly takes the idea of a green roof to new heights (pun intended). While we’ve seen some lovely green roofs in the past, few are as much of an enveloping experience as Midori no Tobira is with its perfectly pruned landscaping and lavish mossy walls. It comes as no surprise that Ishihara inspired by his childhood memories of hiding out on the roof of his house, and hoped this pacifying design would imbue visitors with the same soothing sensation.
While the secret garden is so placid that it appears to never even have been touched by human hands, a lot of thought actually went into the variety of plants that be planted there. Some species used were Equisetum hyemale, Hosta ‘Blue Wedgewood,’ Iris sibirica ‘Tropic Night,’ Acer palmatum, and Aster x frikartii ‘Monch,’ and one you’ll find a bit easier to pronounce – moss.
Ishihara designed Midori no Tobira as part of Green Door, a sustainable landscaping consultancy.