As I stepped into the (tcherassihotels.com
), pictured, in Cartagena, Colombia, it was all that I could see: a sky-high wall of 3,000 local plants cascading down into the heart of the open-air lobby garden. It immediately conjured images of the in Paris, where a massive living wall was introduced by botanist Patrick Blanc. This is the new world of vertical gardening, where plants are the new black and everyone from gardeners to designers can’t get enough succulents. Another tall wall to watch for is at (hotelmodera.com), where tufts of ferns, ornamental grasses, box leaf, and dwarf periwinkles bring its Portland, Oregon, front courtyard entrance to life. For those who want to do it themselves, San Francisco-based (floragrubb.com), the company behind the “air plant” wall at the LEED platinum-certified Bardessono hotel, restaurant, and spa in Yountvillle, California, will supply you with the requisite tools, from plastic panels to the Woolly Pocket system that uses recycled plastic bottles.